Actually I thought of this too. The unloader clutch behaves properly...shuts off when out of seat. The header clutch stays on when out of seat (not ok as per manual). It does behave and appear to be electrical...at least I'm hoping so. Are there any relays in theses circuits that could be faultyIJ Is the seat sensor in the middle of the seat, edge of the seat IJIJ I'll keep testing. Thanks