So you have replaced the clear LED in the mantlet with a red one, replaced the mantlet LED with a clear one and pluged it into J1, installed a jumper on the recoil servo inner 2 two pins, plugged in battery and turned tank on, Radio TX off, batteries in remote, and still nothing? Now you are making me frustrated! I just checked all 3 of mine to doubble check the steps. Sorry I cant help you more. What is actually happening with your recoil? Have you checked your remote with a camera to make sure its working?