Thank you so much for the write-up! Unfortunately, I am not sure which screw on the lower right, as I am looking at the cluster from the back, you are speaking of. Is it the one just above the dimmer switch assembly? I have attached a picture of the back of mine.

Attached Thumbnails

 

__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel