Hi there, that's me again with news!
A bit of usual model work here - I use my unfailing scriber (engraver of panel lines, sorry, don't know how will be correctly) to cut Main Cannon to bunch of pieces, and re-glued them in necessary position. But they are too short, so I use extruded plastic to make them longer and a little wider.
I cut bridge's up from main body, and make main bridge with plastic and tamiya's putty. Main body was elongated with epoxy putty.
Legs was glued straight to "arm's connectors" back. But, they still can be curved, if need, it's funny.
I reverse arms with Daedalus and airship-carrier onto 180 degree and cover holes with plastic.