2016 Precedent Inconsistent Throttle

[mndanielsncsu]

I've read through a number of posts and think I know the issue but want to make sure before buying parts.

I've got a 2016 Precedent with an Alltrax XCT500 controller, 2G cables, stock motor, PD+ batteries. The cart runs around 30-35mph depending on the level of the ground. I've noticed that when I'm at higher speeds, the cart/ throttle surges. My first Alltrax controller died so I'm on my 2nd one and I never noticed this issue with the first controller. Not suggesting that's necessarily the issue, could just be coincidence.

I've checked the settings and the RPM limit is set to 6000 rpm so I doubt I'm coming close to hitting that. I've pushed the cart in forward/revierse and it beeps which I believe confirms the speed sensor is working. I feel like I'm down to the MCOR at this point. I've tried pushing the pedal 30x in neutral to clean the contacts but that hasn't seemed to change anything. Anything I'm missing?

I've loaded screenshots from the Alltrax app.