Experience with burnishing lifter bores?

OK the tool is here and I see the ball is different on one end.

View attachment 1716126350

Does one end or the other of it need to go into the block? Is it as simple as put either end of the ball in the lifter bore, bang it through, then slide hammer it back out? (@pittsburghracer)

It seems like the rounded end would go to into the block from the top and the other end would butt up against the jam nut on the improvised slide hammer? In other words, put it on the end of the slide hammer in the opposite direction of the photo?

The only marking on it is the part number.


Lol I’ve never touched one let alone use one. Sorry.