I don't recommend using the CA and backing soda trick as once it is set it's very rigged and bound to fracture once the gear takes a hard landing. I would do as Alex has suggested and use 30 minute epoxy and some 1/4" or the largest size triangle stick stock that will fit within the tight confines of the fuselage. Epoxy's properties allow a great deal of energy to be adsorbed before it will let go. Unlike CA, it's extremely stiff and depends on the wood to absorb the energy. More times then not, it'll fracture.