I found a bug! model very nice 5/5, but a little bug, can make this model unusable in warcraft game. When shuttle dies, it moves outside declared selection sphere (center 0,0,70; radius 100). All vertices outside this sphere will increase radius to 1300 and when i try to select two or more units, it will select nearest shuttles. But "near" is so far and any selection near shuttle will select this shuttle too.
Bugfix: any vertices outside sphere 100-150 radius must be in this radius. (ex. I set die animation without move and bug fixed)