Recommendations for shop to freshen engine

You can't do this yourself? How much of a freshening do you think it needs? Having problems? Or just want more power?
Lotsa miles? What is this slant in?
I don't know the geography out there very well but
"Out east" (I'm in Illinois) the 1st that comes to mind, are Rick and Ryan Covalt somewhere in PA.
They are very regular contributors over on the /6.org site.