Thanks for posting, and I'm sorry for the trouble. We do not currently have a match for this top sash guide, but we found a possible match and are currently working on bringing it in. I will let you know as soon as it becomes available.
I'm not sure why the balance became disconnected, though. Can you confirm your sash weight? I see you ordered our 2750 option, which is particularly strong. I just want to make sure that this is the best spring strength for your window.