I had a set of wheels straightened and rims polished at Rite-Way Wheel in Walnut Creek. It doesn’t look like much, but they are highly regarded as the best in the area and were recommended to me by folks I trust. They did an awesome job on my SSR Comp-H wheels, which are no longer made.
When I called to inquire, they told me they will do anything except weld a cracked wheel. I didn’t have any cracks anyway.
IMO, safety is #1. I would not do it personally.