I need new balance for a broken one.

I agree, our S395-35 looks like a great match. Your old stamp of 3440 is calibrated to hold 23 through 30 pounds, so if you think that's too strong then you should weigh your sash on a scale to determine what might be better. The next strength down is 3430, which carries 18 through 23 pounds, but the last thing you want is a balance that's too weak.

As for the top sash guide, would it be possible to see a couple more photos of this? I'd like to see it clearly from the front and side. Think of it like a mugshot. If you can show it to us in undamaged condition, that would be the most helpful. Thanks!

Tom is out of the office today but I would recommend starting by comparing the dimensions shown on the 18-009 product page to your top sash guide. Take a look and see if this might be the part that you need.