[simpits-tech] HUD/Reflector Gun Sight question

[Akin, Keenan L]

At the risk of asking something that has been asked/answered before (I am
new to the list), does anyone have experience with DIY HUDs or Reflector
Sights?  The two questions I have are:

1.  How do you get rid of the double reticle image (due to reflection from
both near and far surfaces of the reflector glass)?
2.  How do you focus the reticle at infinity (so that it appears in focus
with the view on the projector screen)?

Any thoughts from you veteran simmers would be appreciated.

Keenan