Here's a pic of how the hatch is pulling on the seal no matter how well I try to tuck it in right. It pulled the center off the adhesive. I should be able to redo it and try to turn it farther to the front after I try the shims, but it's frustrating to say the least. That said, this is a huge step above how the previous one sat.
In mostly happier news the spare tire fits incredibly well. Very happy with it and it all comes clean under the T3 cover. I bought the cover ages ago just to have even carpet in the back, but honestly could never put much weight in the back for fear that it would bend with nothing underneath.
Only downside is the 280z tie down hardware doesn't seem to fit well with it. The way the lower piece is shaped raises the screw handle enough that it won't thread in. For now I flipped it and put the freebie shop rag I got at the car show between the wheel and hardware while I find an earlier style tie down that has covers the full hub opening.