Been playing around a little, and think I might be on to something. I got a stock nozzle to produce a very fine mist at low fuel output,and at high fuel output. It also chirps and squeals nicely. I tested and modified lots of nozzles,and never seen any do this. Now I need to build 7 more. The marine nozzles that I'm running currently are sticking again,I'm convinced they are no good.