If the depth of the shoe is 15/16" then I think it's safe to assume that it has simply worn down a little from age. If you have any other questions, let me know!
Thanks Donna, I have ordered two balances to fix one window. Once I know that works, I'll order enough to fix the other windows.
Ahhhh the joy of homeownership.
Appreciate your follow-up,
Enjoy the weekend,
Loleita
Haha great! I hope things work out. Let me know how it goes.