A ding in my mind is not something that would need straightening. Furthermore, the floor plate is quite thick. So, what is it that you mean by ding and what portion would need straightening? Do you think that it needs disassembly for inspection of this ding to verify that it does not displace internal parts or affect function? I'd chalk it up to the cosmetic deficiency column and not worry about repairing.

Shoot straight,

Bird