It is indeed the stretchy stuff. My problem has been getting the zap stuff soaked end of the line into the superglue filled hole at the right angle. Next time I am planning to try glueing short lengths of very fine brass tube onto the ends of the lines which will make them easier to handle.
I think I have enough engines for them to leave any maintenance until they are on the ground. I will however be fitting a ladder so Cap'n Fat Hamster can climb down from his flying bridge and get inside the plane to use the dunny.
Crew will be 1 commander, 2 pilots, 6 gunners, 1 radio operator/bomb aimer, 1 chef, 1 engineer and a cabin boy (Roger).