So my TB mounts were wiggling so I decided to just rebuild my drive trian. I never put lock tite on it so I was expecting this. (I haven rode it, just had it built for fun. I’ll put lock tite on for the real thing)
Anyway, my trucks look like this after I tightened those mounts:
It looks like the clamp wasn’t tightened evenly, go slow to make sure the clamp halves are parallel, I wouldn’t worry about that damage though
Ideally the screw head is pointing at the deck or is shielded by the motor mount but that should be okay
Edit: I though that was a 2 part clamps, more likely a set screw was poking into the hangar while the main clamp screw was being tightened, make sure all set screw are backed out before clamping
It looks like it’s because of the set screw. It will dig into the metal if you tighten it too much. Look at mine. (I have multiple sets of wheels so I move it sometimes)