You say you want to polish one of them....why? If you polish one, it will push down the lane farther, but it will also snap off the spot harder. Is that what you are looking for? I know from experience the TripleX-Extreme is a snappy ball by nature, and because of it's core. Is that what you are looking for? an extremely snappy ball? Be ready to see a lot of ten-pins!
I generally polish balls just to give me more length......then, fine tune that polish for control on the backend. I like that you're a Retro kind of bowler. I too have found a lot of recent success going backwards in time with my ball use.
Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug; some days you're the windshield.