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I agree with Joel71, you also need to step up to atleast 1.7 tip for primers,with 1.5 tim, you'll be there all day trying to cover the whole car. I wouldn't use anything smaller than 2.0 ,mine is 2.2 I believe



I think DP with a 1.5-6 tip is about right, it is quite thin not a building primer...

I have had the same problem on extended sprays or where I take a "break" -- ALWAYS wipe the air nozzle / tip down with lacquer thinner every now and then, it keeps paint buildup from f'ing up your spray pattern...