Club Car Precedent Jerks and Stops

[blfinche]

I've been working on upgrading my Precedent after the original controller burned out. I upgraded to an Alltrax XCT 500 Controller and D&D motor. New 2 gauge cables. I'm running on 23" tires. Now to the problem.

When I step on the accelerator the cart will go kerthunk and just kind of jerk. I can ease on pedal and get it going sometimes. Other times, it will run fine. It always runs fine in reverse.

I've tried swapping the mcor, but it didn't make a difference. I disabled the speed sensor in the controller and it didn't make a difference. I lowered the low voltage to see if the batteries were the issue and again no difference.

I've been working with Alltrax support, but I would like to hear from you guys.

Any suggestions?

Thanks

Thanks in advance.