Don't forget to ask the right questions of any plater you are considering using:
1. IS A COPPER STRIKE (BASE) APPLIED?
2. WHAT TYPE CHROME MATERIAL IS USED, TRIVALENT OR HEXAVALENT?
3. References - customers they did work for
The best suggestion I could offer is to stop in at a hot rod show or motor cycle show and ask owners if they have chrome work done for their rides & see if their vehicles look good.
It is also important that you remember outgassing is a normal component of the base pot metal alloy (best for this sort of chroming is ZA3, a Zinc based metal with 3% Aluminum alloy) due to temperature and time. When air, gasses, or other voids inside the material start to work their way to the surface there is not much you can do about it. In time this stuff will reach the surface and will break through the chrome. That's how pitting is created. Any shop that says they can "suck" all of this out is a place to stay away from as it cannot be done especially on older materials.
Ken-Dec in KY did not do work for individuals; they were referred to the big place in Nashville; a bit pricy but the work was show quality.