I sold a bass to my brother a few years back. He complains that it's totally unplayable. I ask if he has been humidifying. He responded that he has a whole house humidifier. Ok, what's the actual humidity where everything is being stored? No clue. I took one look at the bass and noticed fret sprout. Very dry and the fingerboard shrank. Aggressive hydration might fix it, but it might need a new fingerboard. He also has a crappy tech who never mentioned he might have a humidity issue. Instead, he has been redoing the setup for his gear many times. I pointed out that both parties needed to put 2 and 2 together. "Oh, yeah?! I'm in a band and you're NOT!" Yay for siblings. I learn't my lesson when I put some small cracks in a Rob Allen bass a long time ago. I'm now on top of humidity control. One benefit is that I rarely need to touch my setups.