Just wanted to update with my personal solution.
1.The upper right flipper is rebuilt and aligned correctly using the pin hole. (Please note that NO special linkage or rebuild is needed. A standard kit for this era is fine even though there is probably a sticker on that upper right bracket telling you to use a special one>> again normal plunger and linkage is fine.)
When properly aligned the flipper is NOT resting against the metal guide behind it. The flipper makes a nice direct line off the upper orbit ball guide so shot around the orbit from left to right do not have path altered by the flipper. This also results in orbit shots returning cleanly to the right lower flipper.
Please also note that for me the magnet will hold the ball so it is just BARELY touching the flipper rubber. This is in opposition to what is mentioned above but I found it to work for me and also found an old pdf showing that the ball, when centered over the magnet, shoudl be touching the rubber just a little
After step 1, I was still only making the shot about 40% of the time. Puzzling, I know...
2. Raise up the magnet core fromt he underside of the pf. Use a nice flat metal file and plane off the top surface to remove any dents or imperfections of a perfectly flat surface. Then lower the magnet back down so it is only a cunt hair higher than the pf level (cunt hair is technical for ~1/64inch). The ole pdf recommended 1/32 (2 cunt hairs) but I found 1/64 worked better.
After step 2 I now make the shot 100% of the time
This may not work for you, but it did for me. It is essential to the enjoyment of this game for this shot to play like it should >> 100% making it with the mag.
Other details that may be of interest. Red regular flipper rubbers, perfectly level L to R, and any pitch form 6 to 7 degrees works perfect for me.
Thanks to others that put forth ideas. Hopefully the above helps someone else in the future.