I'm in Lawrenceville - 45 mins or so from Athens - but no Porsche shops nearby to my knowledge.
My indy is about 30 mins away in Suwanee. The Eurospot - (770) 932-5267. Paul is the owner/lead mechanic.
But Graham Everett is up at Road Atlanta which might actually be closest - and he's got quite a reputation and history.
https://grahameverettmotorsport.com/