I bought a cheap 60A dc motor pwm controller (listed as 100A on ebay but reading the ad it is 60A) think it was $17 maybe less to my Tenant motor out nice being able to run the rpms of motor up and down. Your motor is in better shape than mine. Mine is only 100A continuous. Since the 709 can do 300A for 1 minute, was hoping it would be able to do 250A for 30 seconds.
Later floyd
Later floyd