Jim: It is not a jig, it is a crutch that all the parts/formers are attached/glued to. I'm not sure about the T-6 but the others that I have seen have this crutch. It should look like the fuse from the top but is cutout in the middle. If you look at the formers, the middle/horizontal slots are for the crutch. I have a partial kit, I will check it later and let you know what you need. I will send it to you. Dave