I have given up on my parkzone J3.........i will never buy another parkzone product again. I loved my J3 at first, but now I am having serious issues with it, mainly that the control inputs are all backwards and I can' fix it, no matter what I do. I also had terrible problems with my f27 stryker.......so I have given up on parkzone. does anybody want parts to a J3........I have done everything I can to destroy them.