I buffed my camaro a few times always had swirl marks come out for some reason. I bought the boss G21 to make my jobs go quicker and better. So I buffed it out and looked amazing under all my lights no issues what so ever. So I applied the Gtechniq ex0 coating how they recommended. 3 days later I'm noticing water spots , scratches and imperfections popping up. Now why is that after everything look great when I did it and now everything is showing thru? Looking to resolve this issue. I'm working on a black Mercedes that needs paint correction. So far it's coming out like glass. It I use a rotary buffer first to cut it better then I go with the boss g21.