I just ended up ordering Ten Factory shafts for my '15 JKU.Sorry to hear that hassle, but thank you for your input! At this point, it almost sounds like I can just flip a coin to choose between Ten Factory and Carbon. My only incentive for Ten Factory is the pressed studs (it seems through northridge4x4) and then not being screw-in type studs. Otherwise pretty similar and equal number of supporters for each have chimed in.
Most places are on back order but a forum member turned me on to Offroad Elements who had them in stock. Ordered yesterday, supposed to arrive Friday (probably Saturday though).
I called and checked before ordering and they were in stock as of yesterday (I had emailed last weekend and was told they were in stock, but Northridge told me same thing but had sold out of them over night when I had waited to order), they also said wheel studs are not installed (everything else is) due to worries about damaging during shipping.
Good luck w/ your search.