[Henry's Lady's Man]

Originally Posted by pat in Santa Cruz

it will work its way to the bottom unless you tack weld it up top.

Pat, Seriously???

I'm not refuting you, but I never heard of, or considered that the shim would work its way down. The hole in the center is clearly intended to pass lubricant from "on high" onto the ball. If the shim ishifts downward, that would be a design flaw, I'm thinkin'. Then again, a shim was not in the original engineering. You could be right.