I have a Graflex Super Graphic with a optar 135mm f 4.7 Wollensak lens with a Graphex shutter. I have read the threads and examine the manuals and and set the Infiniti stops. The camera now focuses like a dream through the ground glass it takes almost nothing to focus it. However the rangefinder is another matter when I look through it I can see the image move but the image quality is poor and is just barely there. Any help you can provide me with would be appreciated.

Beamsplitter mirrors used in these rangefinders fade and the secondary image becomes dim. The silvering frequently comes off when cleaning.
I have some beamsplitter mirror I purchased off ebay and it can be purchased from Edmund Optics. The type is 50/50.
Read:
https://graflex.org/helpboard/viewtopic.php?t=6211
https://graflex.org/helpboard/viewtopic.php?t=4647
https://graflex.org/helpboard/viewtopic.php?t=4653
Once removed for servicing clean both mirrors and the view windows on both sides.