Hi I’m new to the site! I have a 98 300 ex that I bought as a project and took it down to the frame had all powder coated and new bearing all installed. I took the engine down and split the cases because the rod bearing was bad. I put new crankshaft and balancer in and had the transmission checked by the dealer to make sure it was all good. I then put the cases back together and put everything back on. Before I put the top end on I decided to test and see if I could shift the engine. The engine will not let me shift into any gear. I tried turning the crankshaft to see if I could shift and it wouldn’t let me. I then retook it back down and split the case again. I looked at the drum shifter and it spins all around like its suppose to. Any help I would appreciate. Thanks for looking hope to hear soon what it could be!