So I got him started - slow going here; I don't have the work space I did a few years ago and lots of tools are in storage. But his head is done.
The "sledge_riprock" kit is great - everything you need is included and the casting is first-rate. I've only had to make one adjustment to the parts right out of the box, so far.
The kit includes a recent Snack Dispenser (on the right) - I'm using an older run that I bought on Amazon for ten dollars a little while ago; the jaw action is a bit smoother.
Tom seems to be into a whole weird area here. I don't judge.
The kit Dispenser had the twist-off dome; I took the older one off with a coping saw.
Upper jaw was glued in place; I cut it loose with a jeweler's saw.
Here's the one adjustment I've made: the jaw spring rubbed against the cut-away groove of the T-pipe. I drilled and cut away some additional material where the black marked area is here, and now the jaw moves freely.
The string included with the kit is almost like wire; I guess fishing line of some kind? Anyway, it seems really strong - high quality. I put a drop of glue on the knots.
My experience with hot glue has not been reliable, so I used epoxy. That was a mistake - it gets all over everything no matter what I do, so there was glue on the string and glue on the inner PVD sleeve and CD storage spindle that I used (per the Gary Glover YouTube video) to align the T-pipe. So I had to clean and fuss and worry at those bits during the adhesive curing to keep them from getting stuck.
But here he is. I think I'll go ahead and primer the head next before moving on to the arm and torso assembly.