Another member here called me today actually and he said Tera told him directly that their joint is made in China. It's all Chinese these days.That’s the spare that I carry. Same as with Teraflex, they engineer these. Dana did it originally and they are all made in China now. Vendors are just putting their name on them and distributing.
The guy from Tera suggested he would inquire about modification of the boot but it sounded a bit like he was just trying to appease.
I am hoping Plan A for me will be ready in a couple more weeks. If it works I will certainly disseminate the info as soon as I can. Still waiting to hear back on 100% confirmation they can build what I want and do it properly.