The governor gear isn't very tight on the shaft. Just how they are.... but replacing it won't hurt either.
No, the crank bearings are seldom bad. Clean them up and inspect them. After cleaning, lube them a bit and roll them. If you roll them dry, I promise you will think you "feel" something, but it's not likely anything. Look the race's over and see if you see any pitting or damage. They seldom need replaced unless the engine injested dirt, or or never had an oil change.
What about the crank? Did you get it ground?
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