Thanks,
Matt
Hi Matt. First off, the closest match we have to your pivot bars is our 26-150. Weathershield changes their parts pretty often, so it's hard to get exact matches. Take a look, compare the dimensions to your old pivot bars, and see if these will work for you.
Now as far as your balances go, we can replace these for you, but it will need to be a custom order so we can attach the 15-197 shoe to the balance for you. To answer your question about the stamp code, ultimately the most important part of the code is 34HD, which designates a balance calibrated for a window sash that weighs between 24 through 29 lbs. Out of curiosity, did the two balances you're replacing come from the same sash, or did each one come from separate sets, i.e. from the lower and upper sashes of this double-hung window? Keep in mind that if the balances are from different sashes, it may be wise to replace all four balances; when one balance goes, the other in the set usually isn't far behind.
You will shortly receive an email with a custom link to order a pair of the S751-35 Channel Balances with a stamp option of 34HD and a 15-197 Shoe Attached. Let us know if you have any questions. If you need a different amount, let us know and we'll send you an updated link. Many thanks.