diff --git a/client.go b/client.go
index 99c3211..db1cdb6 100644
--- a/client.go
+++ b/client.go
@@ -168,6 +168,7 @@ func (cl *RemoteClient) connReader() {
 func (cl *RemoteClient) connWriter() {
 	for line := range cl.writeq {
 		written := 0
+		line = strings.Replace(line, "%", "%%", 0)
 		bytes := []byte(line + "\r\n")
 		for written < len(line) {
 			n, err := cl.conn.Write(bytes[written:])
diff --git a/handlers.go b/handlers.go
index dfaeb52..640fff9 100644
--- a/handlers.go
+++ b/handlers.go
@@ -55,7 +55,7 @@ func handleCmdPrivmsg(sv *Server, msg *irc.Message) {
 		clid := strings.ToLower(msg.Pre)
 		chid := strings.ToLower(msg.Args[0])
 		if sv.channelCheckMode(chid, "m") &&
-			!sv.channelCheckPerm(chid, clid, "ohv") {
+			!sv.channelCheckPerm(chid, clid, "qaohv") {
 			sv.sendReply(clid, ERR_CANNOTSENDTOCHAN, chid, "Cannot send to channel")
 			return
 		}
@@ -84,15 +84,27 @@ func handleCmdJoin(sv *Server, msg *irc.Message) {
 	sv.sendMsg(msg)
 	sv.sendReply(msg.Pre, RPL_TOPIC, msg.Args[0], sv.chTopics[msg.Args[0]])
 	sv.channelNames(msg.Pre, msg.Args[0])
+	_, isadm := sv.admins[clid]
+	if isadm {
+		mode := "q " + clid
+		sv.chModes[chid][mode] = true
+		sv.sendMsg(irc.M(sv.host, "MODE", chid+" +q "+clid, ""))
+		sv.sendMsg(irc.M(sv.host, "PRIVMSG", chid, clid+" is a server administrator"))
+		return
+	}
 	_, isop := sv.opers[clid]
-	if first || isop {
+	if isop {
+		mode := "a " + clid
+		sv.chModes[chid][mode] = true
+		sv.sendMsg(irc.M(sv.host, "MODE", chid+" +a "+clid, ""))
+		sv.sendMsg(irc.M(sv.host, "PRIVMSG", chid, clid+" is a server operator"))
+		return
+	}
+	if first {
 		mode := "o " + clid
 		sv.chModes[chid][mode] = true
 		sv.sendMsg(irc.M(sv.host, "MODE", chid+" +o "+clid, ""))
 	}
-	if isop {
-		sv.sendMsg(irc.M(sv.host, "PRIVMSG", chid, clid+" is a server operator"))
-	}
 }
 
 // Handle user parting the channel and delete channel if last user has
@@ -108,6 +120,8 @@ func handleCmdPart(sv *Server, msg *irc.Message) {
 	}
 	sv.sendMsg(msg)
 	delete(sv.chUsers[chid], clid)
+	delete(sv.chModes[chid], "q "+clid)
+	delete(sv.chModes[chid], "a "+clid)
 	delete(sv.chModes[chid], "o "+clid)
 	delete(sv.chModes[chid], "h "+clid)
 	delete(sv.chModes[chid], "v "+clid)
@@ -144,27 +158,27 @@ func handleCmdMode(sv *Server, msg *irc.Message) {
 		switch modeSwitch[1] {
 		// maybe this can be done more elegant
 		case 'o':
-			if !sv.channelCheckPerm(chid, clid, "o") {
+			if !sv.channelCheckPerm(chid, clid, "qao") {
 				goto noPerm
 			}
 		case 'h':
-			if !sv.channelCheckPerm(chid, clid, "o") {
+			if !sv.channelCheckPerm(chid, clid, "qao") {
 				goto noPerm
 			}
 		case 'b':
-			if !sv.channelCheckPerm(chid, clid, "oh") {
+			if !sv.channelCheckPerm(chid, clid, "qaoh") {
 				goto noPerm
 			}
 		case 'v':
-			if !sv.channelCheckPerm(chid, clid, "oh") {
+			if !sv.channelCheckPerm(chid, clid, "qaoh") {
 				goto noPerm
 			}
 		case 'm':
-			if !sv.channelCheckPerm(chid, clid, "oh") {
+			if !sv.channelCheckPerm(chid, clid, "qaoh") {
 				goto noPerm
 			}
 		case 't':
-			if !sv.channelCheckPerm(chid, clid, "oh") {
+			if !sv.channelCheckPerm(chid, clid, "qaoh") {
 				goto noPerm
 			}
 		default:
@@ -196,7 +210,7 @@ func handleCmdTopic(sv *Server, msg *irc.Message) {
 		sv.sendReply(msg.Pre, RPL_TOPIC, chid, sv.chTopics[chid])
 	} else {
 		if sv.channelCheckMode(chid, "t") &&
-			!sv.channelCheckPerm(chid, clid, "oh") {
+			!sv.channelCheckPerm(chid, clid, "qaoh") {
 			sv.sendReply(clid, ERR_CHANOPRIVSNEEDED, chid, "You're not channel operator")
 			return
 		}
@@ -210,11 +224,13 @@ func handleCmdKick(sv *Server, msg *irc.Message) {
 	chid := strings.ToLower(msg.Args[0])
 	clid := strings.ToLower(msg.Pre)
 	target := strings.ToLower(msg.Args[1])
-	if !sv.channelCheckPerm(chid, clid, "oh") {
+	if !sv.channelCheckPerm(chid, clid, "qaoh") {
 		sv.sendReply(clid, ERR_CHANOPRIVSNEEDED, chid, "You're not channel operator")
 	}
 	sv.sendMsg(msg)
 	delete(sv.chUsers[chid], target)
+	delete(sv.chModes[chid], "q "+target)
+	delete(sv.chModes[chid], "a "+target)
 	delete(sv.chModes[chid], "o "+target)
 	delete(sv.chModes[chid], "h "+target)
 	delete(sv.chModes[chid], "v "+target)
diff --git a/server.go b/server.go
index 1c23a23..3fba1c6 100644
--- a/server.go
+++ b/server.go
@@ -22,7 +22,7 @@ const (
 )
 
 var myinfo string = "%s %s/%s * *"
-var isupport string = "CASEMAPPING=rfc1459 CHANTYPES=# NICKLEN=32 MODES=1 PREFIX=(ohv)@%%+"
+var isupport string = "CASEMAPPING=rfc1459 CHANTYPES=# NICKLEN=32 MODES=1 PREFIX=(qaohv)~&@%+"
 
 type Server struct {
 	queue chan *irc.Message
@@ -36,7 +36,8 @@ type Server struct {
 	created  string
 	motd     string
 
-	opers map[string]bool
+	admins map[string]bool
+	opers  map[string]bool
 
 	clients map[string]Client
 	clModes map[string]string
@@ -65,6 +66,7 @@ func NewServer(configPath, software, version string) *Server {
 	sv.addq = make(chan Client, 128)
 	sv.delq = make(chan Client, 128)
 
+	sv.admins = make(map[string]bool)
 	sv.opers = make(map[string]bool)
 
 	sv.clients = make(map[string]Client)
@@ -84,9 +86,13 @@ func NewServer(configPath, software, version string) *Server {
 	sv.info, _ = sv.config.GetString("server", "info")
 	sv.motd, _ = sv.config.GetString("server", "motd")
 
-	opers, _ := sv.config.GetString("control", "o")
-	for _, oper := range strings.Split(opers, ",") {
-		sv.opers[oper] = true
+	nicks, _ := sv.config.GetString("control", "a")
+	for _, nick := range strings.Split(nicks, ",") {
+		sv.admins[nick] = true
+	}
+	nicks, _ = sv.config.GetString("control", "o")
+	for _, nick := range strings.Split(nicks, ",") {
+		sv.opers[nick] = true
 	}
 
 	sv.packetsTransferred = 0
@@ -326,8 +332,8 @@ func (sv *Server) channelNames(nick, ch string) {
 		if names != "" {
 			names += " "
 		}
-		modeFlags := "ohv"
-		modeChars := "@%%+"
+		modeFlags := "qaohv"
+		modeChars := "~&@%+"
 		for i, mf := range modeFlags {
 			if _, exists := sv.chModes[chid][string(mf)+" "+clid]; exists {
 				name = string(modeChars[i]) + name