50 PSI???
Wayyy too much PSI.. I shoot mostly at around 15-18PSI and I have no problem with my faskolor.
WINDEX is the only way to go IMO... I do around 60/40 paint to windex works for me. I have a few empty containers so I empty half paint then top with enough windex shake and paint.... I do a little more for certain colors, but in general 60/40. And definately no more than 25PSI... Hope this helps..
Oh yeah.. I use an Iwata Revolution HP-CR with a .5mm tip. Best bang for your buck...