Slight bend in Centerline...

Yes I have seen it done that way. Check with body shops in your area for a mobile wheel repair guy. The body shop close to me has a guy that comes to his shop and repairs steel and aluminum wheels. Worth a shot.
Also check with motorcycle shops. Years ago I had a set of Centerlines given to me that were bent on a tire machine.I took them to a guys motorcycle shop and he machine straightened them.