wideguy

You could shim under the lower outer race, but it would take a precision washer of the correct i.d. and o.d.
I wouldn't hesitate to take a rotary file to the offending extra material...

I was still thinking about the differences in the upper and lower bearings. Obviously the i.d. of the upper is smaller, but, could the outer races be reversed? Will either roller assy. fit in either outer race? Will either outer race fit in either bore?
I'm guessing the lower bearing assy. is more robust than the upper- does that apply to the outer races?