So I ended up replacing my clutch this previous weekend (a bitch of an experience getting that trans back in, but it got done). When the old clutch went, the trans had a horrible grinding sound in it.

When I pulled the trans out I found out why, the old clutch disc completely shredded into a fine hairlike metallic crap mess. So new clutch goes in, trans goes in, new fluid, car runs and drives but the screeching is still there. Flush the fluid about 3 times, the screech only is there for a few moments when you first start driving, then goes away now.

The big problem is that now 1st, 2nd, 3rd, and 5th gears grind going in. 4th gear is the only gear that still shifts smoothly no matter the rpms. If I baby it (nudge it in, rev match, etc), I can manage not to grind, but it makes the car completely horrible to drive. My question is, could the garbage from the old clutch getting into the trans ruin 4 of my synchros at once? I'm guessing thats it, but I'm also praying maybe theres some other hidden cause?

Or is it new trans time?