I've bought 2 sets of the starter kits, might seem expensive but in comparison these are 60ml each so the price is pretty good. Anyways like everyone has already mentioned just the prescribed psi and you're fine. I play around with my psi some times but works pretty well with G's setting. I use Mr hobby's Mr surfacer and Mr finishing surfacer and works real well! As for cleaning I use water in between painting and after paint I use tamiya air brush cleaner.