Looked at the file in Blender then did a quick export to get a look in RF. So far, all I can really see wrong with it is a few shading issues. I hope this can be taken care of by redoing the smoothing groups. After going back and looking I noticed that all of the sharp edges have been lost. Not a big deal other than gonna take a little time. Pivots, linking, and collision mesh all look good, and for the most part the geometry seems like its in good shape as well except the inside faces of my cowling seem to have either gotten flipped or removed. Overall, I'm pretty happy about what I've got to work with all things considered.