Speed, is back , at it :) Did you get a PRODUCT DATA SHEET , with that primer ? IT : should give you : Recommendations on spray guns, air pressure, caps ( new,to you,and me ), reducing levels ,and ..all the goodies. IF USUING A TRUE GOOD H.V.L.P ...The normal 3/8 " inch air hose ,doesn't fit anymore. LOOK for "High flow HVLP pipe fittings " , and ask lots of questions about what you think about what you actually buy ,before you do.