This weekend I shot my car with DP50LF. I have a 120gal 2 stage compressor, Devilbliss FLG3 gun and was using a 1.5 tip. There's a regulator at the gun and I had one of those disposable dryers between the hose and the ragulator. I have a screen in the bottom of the cup and poured the primer through a filter cup. When I shot the test pattern the spray was nice and consistent. It stayed consistent for some time but then developed a flicker. Not too bad but enough that I had to try compensate for it. My first step for clean up is to throw some lacquer thin in the gun and spray it. The flicker disappeared. Any one have some ideas on what happened?