Sprayed SW Solo for the first time last week w/an aaa. Fluid pressure at approx. 1150-1250, air pressure at approx. 16-20 at the gun. Thinned it at 1/4 cup per gal. Light orange peel everywhere, except crossover points (where jamb leg meets header) where it sagged. Where is the middle ground? Downloaded JP guide to brushing solo, brushed it light, brushed it heavy, still sagged! Interior temp is about 70, rh is about 65. Going over SW Premium W&W primer. Sanded with 320 between coats. I'm at my limit with this stuff. Haven't had this problem with ProClassic WB or Satin Impervor WB. What am I missing/doing wrong? I really appreciate any help, thank you.