These things really can't be that complicated. This (Su do khoi) is the second (first was balsa nova) that I've used pp controls. I can't seem to get them adjusted properly. Either there seems to be slack in the line or the servo buzzes. I think I read somewhere that you should have the linkage hookup the same distance from the hinge line as the hookup is from the center of the servo. I can just about do this with the elevator but using the biggest servo arms I have I can't come close with the rudder to get full swing. So on the rudder I've brought the horn linkages fairly close. (3/8" from the hinge line.) Where is the PP installation guide for idiots?