[Graham]

I probably should have worded the failures more carefully, but basically the loose motor issue could have caused the 3d motor fixing to fail due to torque of the motor, it is difficult to say. But it was more of a motor mount issue then the rest of the chassis. 
   

The other car seems to had a brass tube (to take the guide stem) glued onto a thin part of the original Fly guide holder, and it appears like the adhesive failed. Actually I understand the failure occurred as the car was being taken out the box, so never actually got onto the previous round race tracks.
   

But to answer Tony’s comment, I am not a therapist of any kind. But pleased if I give some assurance to those of a nervous disposition