Beef up the landing gear mount. It's terribly weak. First rough landing-- and your wheels are going to come off.

Use some lite ply and put it in front of the blocks. A piece the width of the fuselage and about 2" long is fine. Or you could even put in a piece to cover the entire area in front of the landing gear blocks. However you do it,, put some light ply in front of the blocks and then put triangle stock on all the surfaces. Use 15minute or 30 minute epoxy here.. The longer set time on the epoxy will allow it to soak into the wood for a stronger bond.

I even drilled 1/8" holes through the fuselage sides and into the landing gear blocks. Then pin it into place with dowels and epoxy. 2 dowles on each side is fine-- but you still need to put the lite plywood up front and spread the load out into the fuselage.