After jetting the bike to burned rec. settings the bike is very responsive here in Pa. (48pilot, 170 main). Anyway I put on a fuel screw adjuster that you can adust with your fingers without dealing with tilting the carb and using a small screwdriver. After riding the I checked the screw and noticed it backed itself out a # of turns. What is everyone doing to keep them from backing out and has anyone else had the problem?