That doesn't look like the right fiber yoke to me, but if you want, you should be able to Dremel off some of the extra material to make it the right shape.
The metal yoke you linked is junk. Those are the type used in Williams games and they break easily. The Bally yoke has a rolled edge which makes them very strong. I doubt you will need to replace them.
Polish the rod/ring (or replace) and plunger until smooth, replace the coil sleeves and make sure you have good solid solder joints on the coils with no strands of wire frayed out
Fredericksburg, VA
