Good to hear that the principle seems to work! 
Are you certain that 10 and 11 have the same coordinates?
If yes, then I imagine that RC is still trying to force the model into a shape it thinks is right, meaning that the background might have more and better tie points than the model itself.
In any case, texturing completely separate parts in one model will only result in chaos.
So I guess what I wouls do is to reconstruct and texture all of the models separately and then assemble them with external software…