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I have concluded that the 6203 and 6003 bearing on my input side were likely causing my issues. There was some noticeable roughness just from spinning them in my hand.
Rotrex chose to use normal clearance instead of C3 clearance which are normally seen on automotive stuff. I looked at alternators, air conditioning pumps and they are all spec'ed with C3 bearings.
Also, the output oil seal is a random size that no one makes. It is likely that I will have to get one custom made... very very annoying.
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