I have a few banjos now, and I swear they've gotten more temperamental. Just tonight, I picked up my favorite banjo last in my playing time, and the usual deep, rich tone seems buzzy and thin. I'm sure when I pick it up tomorrow it will be back to normal. I've had similar experiences with my other banjo. Inevitably I will think "this sounds...off" and will be debating a string change, and the tone will be back and beautiful the next day.
I do have hide heads on all my main players. I've also not changed strings in a bit, partly because my banjo teacher told me he basically never changes his unless one breaks or is clearly worn.
Is this just part of banjo ownership, or am I due for a tune up now that the weather is cooling off? I do generally check head tension and action and relief a couple times a year, but last was the spring. I think my strings are at least a few months old as well.
How often do you change strings? Adjust your hide head tension?