I have an early 5 speed transmission. I'm guessing it is from a '79. I had the transmission rebuilt recently. After the rebuild I didn't have 2nd and 5th gear. So I yanked it out and took it back to the mechanic. I put it back in Saturday and I still don't have 5th gear. It shifts flawlessly 1-4 and reverse seems ok, but when I put it in 5th it pops out when I let out the clutch. Before anyone goes there, the mechanic is used by many hear and considered to be reputable. I'm frankly pissed but I'm not going to call him out. My questions are: Does anyone have any ideas why 5th keeps popping out and if I leave it in for know and just use gears 1-4 am I going to mess something up? I'm loath to pull it out again right away because it's a lot of work, and I'm also loath to take it back to the mechanic because I have lost confidence (and it entails 3 hours of driving). Any advice is appreciated. Thanks.