was the tranny having any problems before this, any grinding or popping out of gear bearing noise etc. I had the same problem with mine and it was my wonderful clutchmasters clutch had started breaking apart. It was a few years ago so I can't remember the actuall terms the guy used but I had a beaten on that clutch terribly and it withstood the hell but it became very loud and chattering and then it got stuck in gear on its way to the shop. I got a replacement it went back to normal.