I have noticed a few posts lately asking for trouble shooting. The more information you can provide to us, the quicker we can diagnose whats happening and how to get back RCing again. I know its hard but the quickest and best way for us to help you solve the issue, is to see and hear the issue... Shoot a 15-30 second vid with Audio. This allows us to hear whats going on and to see whats making all the fuss. If you are unable to shoot a Vid... then a Picture speaks 1000 words... Using a Digital Still camera with Macro mode (Looks like a little tulip setting on most camera's) allows the Lense of the camera to focus objects close to the lense.. Handy for when taking close up pictures of parts that are giving you issues... If text is all you have... then provide us with the best possible description you can.... Not just one sentence of " Its Broken Help me" Go into details.. Explain to us EXACTLY what you are seeing and hearing. Bad Example Its not running... makes a noise. Good Example My Losi Trail trekker was running fine until I came across my first rock. Then the front wheels stopped turning and it made a sound like someone feeding a brick into a paper shredder.. The motor still runs and the rear wheels still turn, the steering still works but the front wheels themselves are not turning.. From something as descriptive as this we can tell there is something not right with the front diff.. This applies to all RC's.. The more info we have... the quicker we can get you back RC'ing again!!!