Not yet, I haven't. My two oldest guitars have both had work done; they're identical model '69/70 Epiphones - one I've had from new - and both have suffered the usual bolt-on neck problems of that model - the neck block shifting, and strut coming unglued. Both necks are fine, though - considering how slim and narrow the necks are compared with my more recent 12 stringers. The intonation is still good on both guitars.