Modified 1998 Bombadier NEV (NEW TO FORUM)

[Rookie1957]

I have a 1998 Bombadier bought it a year ago, It is a 72volt dc NEV. Got it running by putting new batteries and a new charger in it. It soon broke down and I troubleshot it to the controller. Could not find one anywhere. So I rewired the car to work with a Curtis 1205m-6b403 400amp controller. It was not easy but I got it to turn the tires while it was jacked up. Could go forward and reverse with about 1/10th throttle than it would stop turning trying to give it any more throttle. Getting only 12-14 volts through the controller. Bought another controller with the same symptoms. The controller works off of 0-6 ohms throttle and I have tried 2 different throttles both with good readings on my volt meter. I am not getting any faults on the controller, and moter is only turning about 1 mph with no tourque. Anyone know where I can send this controller to see if it is programmed correctly? Any ideas would be helpful. I already have a lot more money in it than it is worth.