I believe this is the right part, can you please confirm? See attached image. The pivot shoe is 2 1/8 x 9/16 x 1 1/4 (although it is more like 1 5/16).
Mine have a screw that holds in the spiral balance. Can I order those from you as well?
Paul from SWISCO responded:
March 13, 2014
Thanks for posting. I agree, out 15-188 looks like a great match, especially if all the dimensions match up. You should be able to re-use the old screw, or you can even use our 26-028 Tamp-R-Lock, which snaps on to lock in the balance.