auginator@Shadocko I chopped it off last night - it was almost a pity, because even the extra piece was so nicely designed :) For anyone interested, getting the extra powder out of the model was a piece of cake, and it fits Lego Techics perfectly!
auginator I have just received mine - what a cool model! They came out great. Question: Should I just snap off the piece that holds all four wheels together, or does it serve a purpose?