i had tried using poorboys ssr2 to remove swirls, and kept getting no results. But then I tried something I hadnt tried before. I worked it like normal with the rotary, and then when it started to dry I backed off some pressure from the machine and lightly ran it back and forth until it was almost gone. That was the trick! Now I can knock those swirls out in one shot, and then finish it off with a pc or by hand using klasse aio. Poorboys products are very efficient, in the idea that they don't spend lots of money in some massive advertising campaign, and expensive labeling and packaging. No, they are bottled and labled simply and helps keep the cost down, leaving more room for quality improvement on the product without passing the cost on to us, the consumer. I like em. plain and simple. ex-p is my sealant that I rely on, of course it goes on top of aio and is followed by p21s after the ex-p, but thats another story. LOL