Here are the instructions for making the Lens Assembly Spacers:
300mm X 75mm ( 1 ft X 2.95" or 3" pipe ) PVC Drain or Sewage Pipe.
Your projector might need a different size, but the procedure might be the same.
Mark and cut a 22mm and 15mm spacers .
Sand over 80 and 150 grit sandpaper laid on a flat surface, and check for uniform width.
Slide over the body of the Lens and cut little notches (see above picture with the glass) where the little bolt heads are in the way of the spacer:
Replace the Lens Assembly and try to focus and adjust the zoom.
I will be securing the Lens Assembly with 25mm X 2.5mm (for the 15mm Spacer ring) or 30mm X 2.5mm (for the 22mm Spacer ring) bolt.
For now it is still in the unsecured state, since I am experimenting with different settings.
Be Safe around cutting tools and knifes!