Working on motors next to your dad (mine is Big Noot), isn't always real glorious. But, you can learn a thing or two if you pay attention. I always use those band-type ring compressors. You can struggle a bit with them - gettin' the thing on straight, loosening the bolt, tightening, jockey'n with the thing. I've always noticed these cast-ring-type compressors in the drawer with all the Harley tools. They work slick. They are all tapered and smooth inside - slip right on - less apt to break a ring. Slide right off the bottom. Trick man ! He's even got one stashed for 3 5/8" big bore pistons. Huh, what do you know ?????