Hi ever since i built my 48v 1000w ebike i've found that every time i'm holding the throttle and i hit a bump on my back tire (rack mount so problem is likely in controller, bms or battery wiring) the bike shuts down and is easily restarted. Has anyone the slightest clue? all the wiring seems fine and i haven't heard of anyone else with this problem. note the problem can't be in the motor as motor is front wheel and it only shuts off when it hits back wheel while the throttle is held.