We are sanding down the fenders still...Our fenders were heavily sun bleached. We found that by using a razor blade to first scrape it off, then start the sanding process. It saved us a ton of sanding.  To remove the oem WARRIOR sticker, we had to heat it up with a heat gun then it pulled off no problem. Still need to use 1000 & 2000 wet sand this fender.  We scraped the other side, just need to sand it.