Oof, I finally got the roof insulated. Let me say I hope to never have to do that again. While it will look good when covered and do it's job with sound/heat deadening, right now it looks like a patch work quilt done by an eight year old and that might be an insult to eight year olds everywhere.
One of the challenges also is getting the roof inserts off the old push pins. They're the same kind of pins used to hold the door panels on but you don't have a hard surface to pry against like you do with the door. What I finally wound up doing is heating them up with a heat gun to soften the "threads" on the pins then pulled them out. That worked great on the edge of the turret ring where there was a hard plastic edge but not so great on the inner pins of the headliner itself (actually melted a spot but thankfully it's on the unseen side). I finally just had to bend the pin heads up all the way around to make them smaller then pulled them through the liner. After that I could heat the threads up and separate them from the inserts.
Another issue I found after test fitting the ring cover is that it doesn't go all the way to the edge of the ring opening. That means I'm going to have some of the messily installed insulation partially visible (if you're looking right at it from the seat of the truck). So instead of having shiny aluminum showing through I took some flat black spray paint and shot it real quick. The other sections of the headliner will come close but now hopefully these parts will blend in with the shadows versus being glaringly obvious.
I'll take some temp measurements later this afternoon. It's supposed to be over 100° today so it'll be interesting to see what the temp on the bare metal of the edge of the roof, the insulated section, then the section with both insulation and headliner.