Can anyone help. I have a refurbished Marelli wiper motor for my 246 Dino which when bench tested showed that there was virtually no difference between the fast and slow speeds. Is this correct? I have also noticed that the electrical current drawn by the motor is approximately 4.8 amps and that run for about 10 minutes the temperature of the motor casing climbs to 58 degrees. The motor/ park gear runs freely. Any thoughts/advice would be welcome. Regards, James.