Nice ride. Somebody took a lot of time on this truck. As for it not being a classic I would argue that it is a 50 year old truck and it is an extended cab that was not as common back then.
Being able to talk to a real person is a rarity these days. I’m glad they will be giving you a discount. So many companies wouldn’t. It’s nice to hear about good customer service.
In the DIY beadlocks they have anti coming rings to mitigate warping of the locking ring. I believe that is what you are experiencing here. Not sure an email from race line will get you anything but I hope I’m wrong and they take care of you.