I recently ended up with a 65 Renault Dauphine in a trade dont know why the car has sat for 30+ years the brakes appeared to have been ruined with mineral oil repaired that but the magnetic clutch seems to be stuck the solenoids work and the car will shift with the wheels off the ground with alot of grinding but stalls if shifted with wheels on ground can the iron powder in the clutch go bad ? or can something else stick from sitting car has less than 35k on odometer any info or ideas would be helpful