After using the uv clear for the last 4 years, I've developed some rules when it comes to it. I never touch UV with anything less than 1500, its just too soft for my comfort level to go any lower than that, although it is incredibly difficult to burn uv clear opposed to other big brand clears, it can happen when trying to get those larger grit sand scratches out. I've talked to Barry and my jobber about this next rule 2, and they say its more of personal preference and having the confidence in the clear with the experience you have with it. I always block/sand uv clear the very next day, then I let it sit outside (weather permitting) for at least a day before blocking any more, or doing any compounding and polishing. I've tried it the other way around, letting it get uv exposure first, than sanding and polishing and find it a bit more difficult to sand or buff. Rule 3, its a sloppy mess but keep the panel wet as an otters pocket, use clean water and clean paper,UV doesn't like any type of trash on your paper or you're asking for a punishing time trying to get the scratch out, and even if you do chances of it coming back are relatively high, so keep it clean and wet. Just like you've already mentioned, step up paper gradually. Another thing I've learned is UV seems to really like really high speed compounding and medium speed polishing, the rpm I use on UV with compound would destroy any of the big brand clears almost instantly, but uv reacts so well to it and doesn't die back when using that higher rpm. I've seen other clears look incredible after a high speed polish and within an hour things are showing back up that you spent so much time correcting. medium speed polishing on uv brings out the super bling.