Your problem will need to be resolved in CAD / Inventor
Many of your parts have subtle (i.e. really thin) overlaps / interferences, this will cause problems with meshing.
Some of the edges that appear when you go in to the Geometry tools seem to come from reference geometry / sketches that are coming through. Try making sure that any of those references are hidden so that they do not come through when launching
Many of the small interferences are on your axle between the wheels and then theres a random surface body in the rar wing.
Apolo
