Okay guys, i'm prepping my truck for a machine polish. washed with dawn to remove wax and then did the pastic baggie test. my paint felt like sandpaper. so then i started to clay, and clay and clay... heres the problem, after i clay an area, i again do the baggie test. the paint feels 100% better and there are no visible contaminants on the clay. but it's still not smooth as glass with the baggie test. do i keep claying til my arm falls off or is it ok to move on to machine polishing after a few passes with the clay!!!!