Sorry for delayed response, work has been crazy. I think it was around 80 degrees with no humidity the last time I sprayed. I use a 60gallon 3 hp compressor so it should have plenty of air unless I am restricting it somehow. Perhaps I will get a shorter hose, hi flow fittings, etc and install a regulator at the tank also. I had one at the tank previously but it seemed to give me fits so I took it off. I do have one at the gun. Not sure how one at the tank would differ from one at the gun??? Gun thoroughly cleaned with mineral spirits and the stuff that comes in the spray can. I soak the parts in mineral spirits also. I did just buy a devilbliss spray gun; a lower end model but has good reviews to see how that helps. The heat is crazy this week so until it passes not much I can do. Thanks for the suggestions.