i bouht a new ofna ultra lx comp all stock but i put in a fuel filter and i have broke it in as they say to do so and i am still having problems with the top end of the rev when it almost hits top speed it starts to POP and it wont go away and i even took it in and they said its because the motor isnt totally broken in yet but i have 5 tanks through it plus the break in tanks and i think it is broken in just fine. if you have any answers for me please post them and if i can't get it fixed i will just stay with my supermaxx and my rustler. PLEASE HELP ME
thank you
john a.k.a. SUPERMAXX83
thank you
john a.k.a. SUPERMAXX83