Looking for some advice here. I have a 2019 F40 Traditional still within the return period, purchased for what I think is a pretty good price. It's B-stock. gorgeous with two tiny dings and sounds fantastic. However, while I was restringing it and tuning to pitch, I noticed a weird vibration that I eventually traced to the neck. It's only noticeable when you go looking for it by tapping on the neck - loudest around the 9th - 12th fret. I haven't played with the truss rod at all for fear of doing more damage and being unable to return it. FWIW, it is supposedly still under warranty. I'm waiting to hear back from the seller, who seems reputable and straight up - I don't think he was aware of any issue when he sold it.
What would you folks do? How concerned would you be?
What would you folks do? How concerned would you be?