Hey there!
Thanks for reaching out to us. We're happy to help with this. Can you show us a photo of the inside of the balance's metal channel where the innerspring connects to the pulley mechanism? That'd be located in the middle of the channel. Can you also measure the depth of the bottom shoe and tell us what you get?
Thank you for the additional photos! Our S380-30 and S385-30 channel balances resemble what you show here. The Series 380 has a 1" deep shoe and the Series 385 has a 1-3/32" deep shoe. I'm afraid we don't have a shoe that measures 1-1/16" deep so you may want to double-check to be safe.
If it's indeed 1-1/16" deep, I wonder if the shoe was once 1-3/32" and wore down over time from use. Let me know what you think.
No problem! I'm happy I could help. Good luck with the repair, I'll be here if you have any questions!
