all of what your saying sounds like problems ive had before with the same set up, problem is its been over half a year since ive touched the robot so i litterally cnt remember how i solved all the problems i had lol, but the flashing yellow light problem used to happen to mine when i used the robots weapon as the voltage spike would crash/reset the speedos/reciever, cant remember which lol you can buy or make a capacitor that plugs into your reciever which might solve your problem, as that helped with mine before