Albert, your Magic Screen Disc(MSD) has marks on the SOLDER LUG,
in the picture it appears blue/ but you will see it. The MSD has a red
mark on it.These marks line up(almost) to the POINT that the WIPERS
are RIGHT on the RIVETS. I am sending some pictures.
The FIRST picture is a close up of wipers RIGHT on the RIVETS.
The SECOND ones are of the marks
The THIRD is proper line up of MSD, WIPERS and RIVOTS
The LAST pictures are THINGS NOT lined up CORRECTLY!!!
Hope this helps,
Terry K

wipers 1 (resized).JPG
Lug mark 1 (resized).JPG
Lug mark 2 (resized).JPG
Proper line up (resized).JPG
Proper line up 2 (resized).JPG
Wipers off 2 (resized).JPG

The Richard Gerlitz video has a good video on how to repair
a broken wiper blade of course you need a spare
wiper blade to work with.
Terry K