im painting with createx paints, psi is set on or about 25. using a ps900 airbrush.. problem just comes and goes but at all the wrong times.. to make this short the problem is i go from laying down a good smooth layer of paint to getting splatters out of no where.. in between changin paint colors i give the brush a good cleaning to have no clogs. and its always the color im using that splatters.. any help would be greatful..