Tuning Tuning shops in eastern TN

Looking to have some work done on my S200 .22 cal. I wanted to get a regulator and quick fill with gauge put on. These are things I can probably do on my own but would like everything to be working 100% and tuned properly after install. Also I bought it second hand so would like someone that knows what they are doing to go through it and make sure everything is good to go (I guess basic lube and seal changes if needed). Just wondering if there are any local shops in eastern TN that any of you would recommend. Thanks