In the top shot you can see the hull joint as the model comes in half for ease of transport to an from the pond an I don't think I tightened the butterfly nuts up fully tight as hull not tight in photo {whoops}
In case you guys are wondering why there are 2mm screws in the chooper's side
its because the electric motor's need serviceing an if the flasher unit for nav led's fail's then the side can be removed an another new unit fitted