not really anything to look out for except what will be most likely very noticeable, except snapped pins, those can hide from ya, and make sure the shift hub grub screw is tight to the shaft on the flat spot (i think it has the flat spot anyways, been a long time since i tore mine down.
+1 to...
with shifting issues, first few things you want to make sure first.
is the engine in tune and getting enough RPMs? if not make sure to tune it correctly, if its too rich it wont shift because the engine is not spinning to correct RPM to allow it to shift (remember shift is based on RPMs the...