Tom, L/B does many things incorrectly. We just installed a customer ordered L/B kit last week and I was amazed how much had to be redone or altered. The doors panels had to be taken apart and trimmed to fit correctly, the seat cushion cover was sewn incorrectly where it is crimped into the springs. Again, almost everything in the kit required re-work to be even somewhat correct HOWEVER I am not so sure it is all L/B fault. If the seat cushion cover had been sewn correctly, I think most home installers would have complained about the fabric being too short since most installers only use hog rings to install them instead of correctly crimping. ( I have noticed even some of their factory-authorized installers do this. ).
So who is at fault? Chances are, L/B would have made the kit correctly if the Restorer would have made the special requests for them to do so. On the opposite hand, the Restorer does not know what is correct (-and is likely unwilling to devote the time to research what is), and as such he is relying on L/B to provide a product that is considered authentic.