As I wrote in the other thread......I use Goop. I don't like to have to have special glues for each project. Years ago, I had a pair of Keen waterproof (right) sandals that delaminated. The company wouldn't fix them as they were "out of warranty". I tried all kinds of things until one day I was in a hardware store and saw the Goop display and figured I'd try it. Wonderful. I basically use two glues now.....Goop and J B Weld ( for permanent, rigid fixes). I've used Goop for a huge variety of fixes.....from attaching figures, glueing in added electronics, smoke units,LEDs, glueing switches to my control panel.....just about anything. And I've never had to redo it with something else because it didn't hold. It's not finicky (like Super Glues) with what it will/won't attach to, sets up faster than silicone, doesn't need a gun or tool to apply, is flexible, you can remove it if you haven't put a huge glob on. I just can't use it for fine work like joining two thin pieces of plastic railing (because it's difficult to use a tiny bit of Goop).
As for the cab figures.........I cut a small piece of wooden dowel to use as the figures "seat". I cut it to be square or rectangular and is usually much smaller than the figure itself. It serves as a glueing surface. The figures are irregularly shaped and hard to glue in by themselves. So, I glue the figure's butt to the top of the "seat", let it set up a bit and then glue the "seat" to the inside of the cab. No redos.....the Goop holds it in. The "hardest" job is pushing the seat up the inside of the cab to make him as visible from the outside as you want. Let it sit for a few minutes, put the shell back on and power up.
Buy yourself a tube of Goop. You'll end up relegating many of your other adhesives to the bottom of the drawer.
Roger