I have a 2014 Gibson Thunderbird that has been in my possession for about a year now. I bought the bass used and have no history prior to my owning it. When I received it (via mail) it had virtually no tension on the the truss rod. I could easily move the truss rod nut with my fingers and the neck had a significant forward bow. Using a 34" straight edge, notched for frets, I have just again applied more tension. I use a feeler gauge @ .015 at the 7th fret to establish relief that if comfortable for me. That said, this is the 5th time I have had to adjust the truss rod back to those specs in the almost year time frame. Changes in weather seem to be the culprit but the relief will increase dramatically and quickly. I use Ernie Ball 105-55 stainless strings and always store the bass in its case. Am I missing something or is this just a sensitive bass?