King of Trim in L.A. is one I've heard to be a good source.
There are tools you can buy from TP Tools or Eastwood for straightening out trim.
Small anvils and picks. There's a thread here on how to polish it too.
I sanded and polished my aluminum top door trim and sent it out to Anotech for anodizing.
Not perfect, but they do look pretty good for OEM
70 bucks later, they delivered.