Parts assistance needed for Anderson balances.

Hello; I need assistance in determining the correct balances I need for Anderson windows. Windows are installed in a multi family property that I own. Windows are marked only as Anderson, with Xi below logo, and (I assume) a date code of 85/0. I have the balances out of windows, but the markings on balances don't match any on your website. Markings on the balance are D34 7#27 2-85, and also marked 11600-17. Most windows are 32x49 size, but I also need balances for bathroom window, which is size 32x37. Thank you.