I measured the bottom shoe. The shape of the part in the photo that you provided is identical to mine. All of the measurements were the same except for the 1/2 inch width. My measurement was 14/32 inch- off by only 2/32 inch.
If you only have the 1/2 inch wide shoe, that will probably work.
Let me know how to exchange the 4 channel balances.
Thanks for your help.
Tom