Similar issue in that I purchased a used Warrior and reached out to them with general info about the bass, but so far no response
Beautiful Roscoe's in your avatar pic! My favorite two brands, Roscoe and Warrior.
Unfortunately, it seems to be a trend that high end builders have less time to provide customer support to owners in the area of information concerning specific instruments that players purchase on the used market. IMO it has to do with overhead costs. It's difficult enough to employ quality luthiers to assist in building new instruments (which results in revenue) and they just sometimes don't have time to research and provide owners with historical info on their instruments. Fodera solved it by charging a fee (Certificate of Authenticity @ $75.00). You send in pics of the bass and the serial number of your instrument, and they provide all of the original build data in a nice packet (and signed by Joey and Vinny).
That said, I've had great results in contacting and talking to JD, Dran and Gabe. But I did visit the shop 1-1/2 ago and they provided business cards with personal cell numbers and emails. They don't always answer but they do eventually get back with me via a text or a call.