Search:

Likely, you might hold them with pliers and oversize them a bit with a round jeweler's file or bit/hand-vise before the polishing process?

TBH, a 5/64 hole in the scales is also beneficial. Pushing as peening will allow for more precise alignment.

"A little here...Means a LOT there!' ;)

The problem I have with lots of solid collars is a 1/16 hole in them is too tight to peen properly using 1/16 rod.
IMO, the rod will seize to the collar quickly and shall not be 'pushed-down' to...