Muncie 318 help.

[Rowe's63C10]

Hey guys, I have a 63 C10 and I'm in a predicament. The clutch went out and I decided I would replace the leaky gaskets in the transmission. Well I ended up replacing the needle bearings in the input shaft and I got it put back together and it locks up unless it's in neutral or the synchro clutch is all the way back and the selector gear is in neutral. I want to get the darn thing fixed so I can drive it since it's been down since fall time. Thanks in advanced guys!