Actually when I did mine, after each and every time I sanded them, they were NASTY looking... all hazed over and gray looking... when I went to the 2000, they looked a little better, but still all gray and nasty. As soon as I applied the plastic cleaner and worked it in good... all of the grayness was gone... they looked perfect. You just have to look VERY carefully after each and every step of the way... my arm can only handle so much sanding at a time... I will sand for a couple of minutes, stop for one, then wipe it clean, look it over, then start back up again for a couple of minutes and so on. You can clearly see where the coating layers are starting to break, where they are gone, and so on... you work according to that (at least I did) and as soon as they are all off and the major blemishes are off... stone chips, spiders, whatever... then you progressively start moving up in grit count paper till you are done. Just note that they won't look great even after 2000, but once you do the cleaner and polish... they look awesome.
