Derfred, this is basic IF, even if it is bouncing around on final. 83% not working, then change it, get back to the speed you want, then set something else eg 86% (N2, of course
). Sure if you get smacked in the face by a gust pull the power right off, but when you're past that, reset the power you worked out before. "Blindly" just putting the throttles "towards the front or towards the back" to control the speed won't work as well at all.