window rail or replacement
Thanks for writing in! The shoe you have here appears to be the Caradco Friction shoe which is part 15-104 on our website. Carefully review the dimensions and compare them to your existing latch to confirm if this might be the replacement you'll need.
We do not sell the jamb liner springs, unfortunately. Since this is a wood window, If you are looking to replace them, you'll need to contact a local millwork to see if they can get you set up with replacements.
I'm sorry that we could not be of help with this part of the repair.
It sounds like you are looking to replace the framing (or the channel) the balance and shoe assemblies are installed in, altogether. Is that correct?
You'll need to contact the local millwork for an idea on where you'd be able to replace that channel or a local window repair shop. Given that this is a wood window, your best best would be to contact the millwork.
I do apologize that I cannot give you a more direct answer.