Todd,

Here are some ideas to consider:

1 - Cheaper alternative of Hysol adhesive
2 - Larger cockpit and cover spring latches
3 - Elecric motor actuated retracts for wheels and smaller ones for doors with separate power supply. Then get rid of all equencers, tanks tubes and valves and rams.
4 - Built-in hopper tank inside the main fuel tank.
5 - Front strut with built in steering (retract-type) motor.

Email me for more details.

Mssa