I recently tuned my 2 speed (4 days ago) and i found it extremely easy i have it shifting at about 50 percent of its top spped to suit the track where i race i noticed when i first got the car i had brought it pre assembled from a fellow racer (brand new, never used) and after a while the nut that hold on 2 gear came loose and the 2 speed pinion undid it self and this was after 12 tanks of fuel, those 12 tanks include the run in. Is this a normal problem ive undone the whole 2 speed and clutch and put everything back together using loctite where i could, is it a regualr problem or is it something cured by loctite?