last sunday was haveing some major low end issues, would bogg really bad off 90deg corners and right before tripples and could not clear them, tried retuneing and only got worse. nothing i hate worse than having a car lap me..LOL, tore down today and found a broke (losi green clutch spring) was kinda surprised, dint act like a clutch problem at the time, idled without spinning tires is what made me think it was tune! i should have known it was not a GXII problem!!!!!