Other Kawasaki Kx80 build

I found out where it's happening! I put in just the big gear and tightened everything down and it won't spin tightened down. What could be causing this?image.jpg
 
I ink the last gear might be touching up against the edge of the case... Let me go over everything and look at the parts fiche to be sure....
 
The one bearing the it goes into though, it does move but it doesn't spin freely like the others. Would that be enough to cause it not to move at all?? It moves and everything but if I try to spin it it wouldn't spin long.
 
Yes I finally fixed it!!!!! I'm so relieved right now!!! I just sprayed some wd40 on that bearing and helped it move a little easier and lubed it up real good. And then I noticed that two of the screws holding it in were pressing up against the gear, especially once everything was tightened down were just keeping the gear from moving. Once I fixed both of those issues I put it on and tightened it down and it spins perfect now!
 
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