Problem - cannot get motor to idle (2400 +/-) w/o turning the idle screw to full rich. Throttle between idle and half throttle is rough when held at a constant. High speed is fine. Using CP 30 heli fuel and located at altitude of 5200'. Checked for fuel/air leaks and could not locate any. Attempted changes to regulator setting and changed out glow plug w/new with little help. Engine has only a half dozen flights total and a couple after being repaired at YS after pilot error. Any ideas.
Thanks
Mark