Sweet. I'll let ya know if the problem persists.
Thinking about it actually, would it help if I give ya the bot file?
edit: That would be so you can find out whether the bot's traction issue is the same one you're fixing.
Just tested it now. It doesn't veer as much but it is still a thing, I'm starting to suspect the hinged wedge on the front might be the culprit.
p.s. Yes, a hinge on a 06August bot. I used a beetleweight motor with a small wheel attached, gonna swap that for an actual hinge and see if the veering persists.