Re: Crazy idea
A little GM TEC, Wipe Out, Warthog and a Q Tip get my APS PKs clean in a hurry.
I now use Bore Tec for about everything.
I'd think tumbling would shine them up a bit????/
Ultra Sonic may be better??
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!