I have my 25cc Homelite Conversion in a CMP Hellcat. Engine is on EI with carb from a G26. Engine runs great on the ground, but as soon as it gets in the air, it 4-strokes. In turns the engine will peak out and sound right, but then in straight line flight, it four strokes again. I think it is a tuning issue, but wanted some more opinions. Is it too rich? Starved of fuel in turns causing it to peak out? Any ideas.