Based on the info you've provided, it seems as though quest npcs do speak correctly. However, some npcs will accept item turn-ins and some do not.
I referenced the npc you mentioned and some rogue guildmaster npcs in neriakc. I'm fairly certain that your problem is that you do not have the needed plugins. Go to your eqemu/plugins folder. You should have 4 there if you're using peq quests and they have created 4 plugins and the npc monk gm you referred to uses a couple of these.
You can find the plugins at
http://eqemuquests.cvs.sourceforge.n...uests/plugins/
Or, just check your eqemu/quests folder. If you d/l'ed via cvs, you should have a plugins folder in your quests folder. Just copy those files into your plugin folder and you should be good to go!
Good luck!