Need some help from some of the 3W Experts out there. It is a 55I US version competition edition. Have had it for 5 years or so. Maybe has 30 or 40 flights. Since new it seems to load up on takeoff and go rich inverted. I have tried leaning the low end and different top end settings. At my last outing I leaned the idle more and it seemed good on the next flight. I was happy untill flight two after the adjustments. This flight the engine seems to lose power at about 20% throttle. Idle is still good and top end is good. Throttle response is good until I fly at 20% throttle for a short time. Seems like when I lean the low end out to prevent the loading up and richness when inverted it seems the low end becomes too lean. I can't get a consistent run.

Very frustrating. I'm starting to wonder if Ihave an ignition issue? Thinking of trying an Rcexcel 3W Ignition.

Ideas?