My 140 got a neck warp about 25 years ago. I wound it straight with the truss rod key and have never needed to touch it since.
I always use lightweight strings because I don't use mics and my voice is not loud enough to get over the sheer volume the old beastie can produce with so little effort. I have sold guitars for a living in the past and parted with many without a backward glance but I have never been able to part with the 140 even when stoney broke. The rent went hang first.
I suspect that I will still be thrashing her when I am 80 odd.