I think I fixed that one already... Problem is my model has all these parts individual, there's over a hundred and fifty pieces to the bearcat itself, all those little details I've added are imported from separate files. When I go to prepare to export for dae, I merge most of those together into big clumps. Collapsing them into groups sometimes picks the wrong one and the normals get messed up. I usually catch them as they look wrong on the model (flipped normals, either hidden or shaded wrong).
Also the cockpit frame needs to be redone. I don't have a bubble canopy cockpit model made yet, working on it now. (If you remember I had made canopies from several different styles)