i get my back with the magnet mod but its dont work anymore. The magnet in the machinebody (not the motorpart) is when i screw the strokewheel complett back on one level with the body and the motor can not free working - when i screw it forward the magnet is coming again the magnet on the motor and dont work anymore. But i can not screw the magnet in the body deeper ( to get room for the other magnet to working. Mike write me always i have to screw it more but i have it on the maximum .