Thanks to Craig S. for your invaluable info on rudder play and adjustment! My throttle control tends to "slip" back and will not stay at higher throttle. Anyone with suggestions on where/what to adjust/tighten to eliminate this slippage? Current throttle control will stay at about 1/2 to 3/4 throttle, but if higher rpm sustained is desired, it slides back gradually. I've been using a tension bungee to help hold in position.