I replaced the 1-2 shift fork and now can't shift into 4th gear. While apart I replaced the shift fork rod detent springs and ball bearings and the shift lever and guide pins so there's no slop in the shifter. So the fork shafts are moving freely and it shifts smoothly in all other gears. It feels like it's partially into 4th but not fully engaged. I've tried turning the input shaft as I try to shift with no luck. I'm stumped guys.