ST 120 tube amp repair


Can anyone recommend a good VTA technician in the Southeastern states? My three year old ST 120 amplifier lit up an output tube so I bought a new matched set. After installation, bias adjustment and 100 hours playing time, I have distortion on some program material and a random "dud" sound without any program playing. Also, a "ping" when the amplifier is first turned on and warms up. I am willing to drive to a shop within 200 miles of Jackson, MS if anyone has a recommendation. Thanks  
4jimbob
I’d ship it to Audiobill—he does excellent work and is super easy to deal with. Shipping will cost you $75 bucks but that is about the cost of time/gas if you drive it a couple hundred miles to/from a repair shop.

jay 
I should have mentioned audiobill is one of the guys who assemble VTA ST120’s for Bob and is in Philly. Super sharp tech at super fair price....
Thanks for both replies. I talked with Henry Alterman and as you suggested he "knows a guy". I wish I was closer to Audiobill and could use them. I did not know, and told Bob so, that I would have to learn a new profession just to listen to music. Should have saved my money for the MC 275 that I really wanted. Thanks again.