I'm trying to print part "fuselage 3" without success. I've tried, as the manual says, to print large end down but the 10mm tube for the large carbon wing rod is printed in mid air and I end up with spaghetti. This tube also supports the shell cuts that in turn support the other tubes. In addition the tube for the 3mm fuselage rod starts in mid air.
Looking at the shell cuts to create the supports for the various internals it looks like Fuselage 3 should be printed with the small side down. The fuselage rod also starts on the baseplate. The problem this case you can't print the magnet bay for the cowling as that is in mid air.
Regarding the cable tunnels in fuselage 1 and 3 these don't look printable as they have extend portions of unsupported tunnels whichever way up they are printed.