Ok so I will triple post my own thread. I found a local company in OKC who will hydro test PB air tanks, both steel and carbon fiber wrapped tanks.
Cost is $25.
Turn around time is 5-8 business days.
City Carbonic Sales & Services Co
406 SW 4th St
Oklahoma City, OK 73109
Degas your tank, remove the tank regulator as all they need is the tank and they do not want the reg attached.
Dropping mine off this week.