I think the reason I’m not noticing wobbles — but I notice the very jerky max erpm backoff — is because I’m using single drive.
It looks like when one motor backs off, it speeds up the other motor because of the way the trucks are, which then causes that motor to back off and the other one reengage (because it’s now slowed down a tad) causing a feedback loop.
That’s my hypothesis, anyway.
BTW I’m using Control Mode: Current Hyst Reverse With Brake