Ok so as most of you know I recently comverted my 04 grand prix to 5 speed. I also grind going into gears. I narrowed it down to not being a syncro issue due to the fact that it grind while parked with my clutch in for minutes. This tells me there is a release issue. So my first instinct is to replace the 23 year old master and slave. Ordered new ones, replaced and same issue.
Next I thought maby I didn't grease the fork and throw out bearing enough. Upon pulling the trans I noticed there was wear marks on the inside of the trans telling me the pressure plate is hitting and causing the clutch to not release properly. My first thought is that the machinist did not grind the flywheel properly thus causing the pressure plate to sit out to far so it hit and also so the disc couldn't release enough to disengage the clutch. So I checked the measurements on the disc and the flywheel and they are dead on. So my next thought is the crank is either walking or the crank sits out farther on the series 3 then the series 2 which if that's the case I can machine the flywheel the extra few thou and be ok. ill post pictures.