Thank you for posting. Before I can recommend an applicable replacement balance for you, I just need to know a bit more information. First, can you confirm that the length of the metal channel is 26"? Please do not count the plastic attachments in your measurements.
Secondly, can you tell me if there are any stamps or markings on your channel?
As for your top sash guide, can you show me a few pictures of that, as well, so I can identify the best replacement for it? Thank you.
The metal tube is 25" 26 if you include the plastic BSI 2420 is stamped on the tube. I don't have pictures of the other plastic part I need but can send next week.
Mike