If you want to replicate the old 1500 polished finish, you can do it at home if you have a ball spinner.
It's basically 30 seconds with a 500 pad + 20-30 seconds with a 1000 pad + liberal application of Storm Step 2 polish.
I've done several balls now and you can't tell the ones I've done from the ones Storm used to do at the factory.
My biggest gripe with so-called 4k Fast, or Storm's general 4000 Abralon finish, is consistency ball-to-ball. Check out an Idol Cosmos on the shelf compared to a Reality Check, they're not remotely the same finish.
What you have to watch out for with the old 1500+polish finish is that it can get too sharp and too inconsistent off the dry. If all you care about is watching the ball go sideways, 1500+P will certainly do it for you. If you're bowling on a lot of sport conditions, you're probably going to a 3k or 4k finish anyway.
