"Seems your object is at the limite of the Univers!
Why not center it on the grid and not on the sky!
Maybe your export is fine but you don't see any thing because scale is out order!"

True Frenchy Pilou but the parts not shown are about double this in length and significantly more complex!
Thanks for looking at it though, I really appreciate the quick look and ideas...I'll see if scaling it to more normal dimensions makes life easier.
David