Hello, I have 2 Sepex controllers that need repair. They are out of Deere E Gator 48 volt cart. The model numbers are 1264-5403. Can you give me an idea what repairs normally cost? One had a code of 3-1, the other one had intermittent voltage out of the forward pin J1-10. Also do you know if I could substitute a 1244 model number controller. How long does it normally take for a repair.