definitely, the joints need to be tightened somewhat...
clear coat is one way to do it, and its working for me so far
maybe someone knows a better way?
if you make the effort to tighten every joint (but dont overdo it),
not only do you get a gerwalk mode, but u get a rather sturdy toy overall.
notice in my picture of the sniping pose,
the wings stay up very well despite the weight of the boosters: