I added some thickness at the end of the well for attaching hinges if I decide to add the inner doors. Traced and fitted end and curvature formers/stops to the bottom sheeting to help shape the well lining and give me something to glue to. The well is lined with 1/32'' (.5mm) lite ply, The gear leg walls are 3/32'' (2mm) balsa for some extra strength for the gear mounts.