[TR] TR2/3 Control head installation

[Angelo Graham]

Hello List:
Puzzling over the control head installation. Finally got the new wires 
down the tube and control head in place. Have the lever at the 12:00 
position and the 'tab' on the plate next to the stator tube in the 6:00 
position. Is this the correct alignment for the head?
Have a noticeable gap between the head and steering wheel hub. Is this OK?
The head still moves when the grub screws are home. My screws were a bit 
beat up. Do they have to extend below the surface of the steering hub to 
make sufficient contact to secure the control head?
Anyone know what size/thread the grub screws are? May have to find a new 
set.
Many thanks for any help on this.
Angelo Graham