Clutch friction plates>whats the wear limit???(Honda)

Hears the story, i went out for my last ride of the year , yesterday, and i noticed that my clutch was starting to slip really bad. Anyways, i pulled my clutch apart today, and nothing seems worn to bad. The friction plates may be past their wear limit though. They have all worn equally too. So what is the thickness of the friction plates suppose to be?. It's a 96'CR250.I dont have a manual, so thats why i dont know. Oh ya and the CR250 clutch is the same from 1990-2000 so anyone with a manual please help.Oh and maybe the wear limit on the springs would be nice to know too.
Thanks:cool:

thanks DirtDawg

I'm going to measure everything up right now. I also noticed now that my aluminium plates have huge grooves in them (the frictions have worn right into the aluminium plates). I think i'm going to put a whole new clutch kit in >Barnett >friction plates, steel plates NOT aluminium!, and heavy duty springs. It's going to cost me about $180 canadian(approx $110 us). Also my dealer said they are kevlar friction plates now. I never knew about this, how are they? Another question, in the middle of all the plates there was one steel plate in the middle. Whats up with that?theres 4 aluminiums on each side with this one steel plate in the middle.