Hey Jacs,
I don't know if this is what you are having a problem with, but I built the front landing gear support by:
Glue a 1" x 4" x 1/8" plywood piece between 2 ribs. The bottom of the ribs are releived 1/8" to keep the plywood flush with the bottom of the ribs so the cap sheets would follow the contour of the rib.
Glue 1/4 x 1/4 basswood support pieces to the plywood piece, where it extends beyond the ribs, and to the ribs.
Glue a 1" x 5/8" x 3/4" hardwood block to the top of the plywood piece and against the rib where shown on the plan. The hardwood block has a hole drilled through it. This is where the end of the wire landing gear goes into. It's important to drill and position the hole correctly so the landing gear wire lines up where it should. The hardwood block should be big enough to help support the landing gear.
The rear landing gear support is built the same way, except the hardwood block has to be cut down to the same contour as the top of the rib where it narrows at the rear.
If this has nothing to do with your problem, please try to explain it again and I'll help you if I can.
Mike