Looks like you're in Utah, any reason you don't get your money back and go with Preferred? They're down southeast of Hurricane, and I've heard good things as of late. They will spin the old barrel off and torque the new one on for you for like $75, and if it doesn't fit, they will spin up a new one right there. They have carbon fiber options.
They're about 5 hours south of me and were a consideration. When I initially called their front of the house person didn't know much and said they couldn't do a custom profile with 5/8x24 threads. They have since produced those but I'm going to stick with my new local smith (45min away) or bartlein.