Tony,
Been working on a Hetzer project, slowly making progress with it, but that's all that's on tap for now.
As to your wheel cap question, it depends on "when" in the life of Max you're wanting to show it. The original ones had the earlier style caps and of the 2 "Max" that saw combat, one served much longer than the other and was also seen with the older style wheels before it was shipped back to Germany.