I have herd of guy having there injectors balanced and report great improvement but have not done t myself..You could cain down you mtr mounts while its out to prevent the new mounts from bust'n loose.Now that you have the gear set its a matter of time till you want duel cases and that means more wear on the motor mounts..Yea,,I agree with marlin on the clutch..Seems any clutch other then the toy clutch just don;t stand up to the jop of cooling as well as the asian one that comes stock..