Amazing detail, here! I'm looking at the legs, primarily. It looks like you've made it where the upper legs slide down into the lower legs for transformation (instead of the original way with the G1 figure where they fold outward and collapsing into them). How heavy is this thing? I wonder if you made a knee joint for it, would it still hold up or collapse under the weight?
I never get tired of looking at this thing, this is one of the most impressive customs I've ever seen.