Hi,
Our windows were new in 2008 (manufacturer unknown) and many of the channel shoes have broken at the end that hooks into the channel track.
It looked like your 15-194 channel shoe would work but it just doesn't quite fit. The channel balances all seem in good condition (no rust, cords all seem fine) so I am hoping I don't need to replace those as well.
Hopefully, from the attached pictures you can identify what I need.
Thanks,
Don