How much are you thinning your paint
I tried to spray the water based paint through a .3 and .5 tip and didn't get good results
By the time I got it thin enough to spray it wouldn't coat good (that brush was a elchepo airbrush "master")
But I can spray through my paashe with a number 3 tip

Note: this is a great product and I have had great results using it just not with that airbrush