...He had no qualms about dismounting/mounting, but told me that the dismount, tire, tube, flap, and remount, would be $250/tire. Ouch.
Ouch! is right.
Wow, you better get a few more prices on that job. For that kind of money you can buy a new 8 lug 19.5" tubeless wheel, and have a tire mounted and balanced.
Grigg