Nikon coolscan IV double image

[Ali2024]

Hi, I'm trying to get my old Coolscan IV running, using VueScan v9, I carefully cleaned the mirror, but I'm getting double images, see attached picture.
I need help thanks

 

[MattKing]

Moved to the Scanners sub-forum in the Hybrid section.

 

[yifanzhang]

You installed your mirror backwards.

 

[Ali2024]

You installed your mirror backwards.

Thanks, I will reinstall it