My Rascal 305 will not move, batteries charged, brake released. The processor blinks 6 times and best I can tell this means the forward/reverse lever is not set in neutral. I checked it with a meter and set it in the middle where it read total resistance. When I pull the levers, the resistance goes down on either the white or red wire depending on which lever is pulled. It appears to be working. Any ideas? Where is the best place for information on these?