450F Is my oil pump bad? Yz450F

Its a short video, not spam or anything weird. Someone please check out and let me know.
As I stated in video, with oil pump in my hand, it turns smoothly, no issues. Once I tighten to 2 bolts down, it begins to show some resistances, even without/before I put that other gear on that interlocks with it.
Just trying to get a for sure answers before I proceed. Appreciate the help in advance.

 
Its a short video, Someone please check out and let me know.
As I stated in video, with oil pump in my hand, it turns smoothly, no issues. Once I tighten the 2 bolts down, it begins to show some resistances, even without/before I put that other gear on that interlocks with it.
Just trying to get a for sure answer before I proceed. Appreciate the help in advance.

 
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