^^^^^^ +1; the OP needs to find a place like YJ in his neck of the woods. Doesn't matter how many shops say no. Most modern shops are geared toward selling bikes, installing accessories, swapping components, and daily/minor repairs. It takes a special breed of builder / repairer to do frame work, but when you find such a person/place, amazing things can be done. Case in point - a buddy came by with a ca. 1990 Shogun with a broken seat binder/lug. He was sure that it was shot, or would cost a fortune to fix. I sent some pics to YJ, and Andy replied describing it as "straightforward", and would be $75.

BTW, the "mitch" in the URL of the above link is a neighbor, one of the founders of YJ back in the day, Mitch Nussbaum. I don't think I've ever seen him on anything but a VERY used old Raleigh (et al) three-speed, and he really does run them right to the end. At his age, I'm afraid it would blow his mind to suggest the notion of rinsing the salt off his bike after a winter ride.