Well Its finally nice outside, so i went and bought some traxxas fuel, and my revo just runs liek crap now wont shift to second just all around horrible. i was using rich's brew 20% before and was working great. change fuel and now bam its like i just grab it out of the garbage. the engine hasnt been messed with, the actual screw in the transmission has been messed with also i have to take spur gear off to change to a new one cause my engine screw came loose and engine moved. does me tighten the nut on the slipper clutch adjust my shift point? anyone know factory turns out on transmission screw?