Tamiya RC Motorized Support Legs (Part Number: TAM56505)

[apfubar]

I modded mine to run off the IR transmission from the truck... More complicated electronics, but no more mechanical problems.

Also on a switch solution, for 5 postions, you should be able to do it with a three position switch mixing with a two position. The two position would limit the throw in one position, and in the other allow full travel.

Cheers,
AP