I'm working on scaling down a model that I designed (as a part)(attached) to a size that will work better for 3D printing. The design is the SR-71 Blackbird Aircraft. At normal size, everything displays correctly. When scaled down .5, the bottom edge of the front loft disappears(below, and attached). nd when scaled down to .1 (which is where I want it to end up) a chunk of the top also disappears(attached). I'm rather confused about what is going wrong, and how to fix it, but I'd be grateful for any help that can by provided.a

And when scaled down to .1 (which is where I want it to end up) a chunk of the top also disappears(below and attached).

I'm rather confused about what is going wrong, and how to fix it, but I'd be grateful for any help that can be provided.