Bushing under rear main cap?

I showed it to my machinist the other day, and he said the same thing. I told him about the new one I found at Hotheads, and he stopped short of horse laughing me! He said "Yeah, theirs are $9 each.....I can get a box of them for that!" He said mine was fine as is since it's captured inside and outside, so I took the block on to the place that bakes and shot blasts them. I pick it up Tuesday.