Thank you guys, I will try that tomorrow and see if any connectors are loos and stuff. but when I hit a bump hard, its really just the engine that turns off or almost turns off. Hmmmmmmmmmm where can I start looking first? can't be the battery cuz I just replaced it and did a mad crazy clean up job on he battery conectors. The reason why i said the mode switch, was cuz I have really bad gear changing every once in a while, and I have to turn it off the VX and restart the engine and every thing is fine after that.