second owner of a 33 year old house. windows appear to be in good shape except balancers appear missing or perhaps broken? windows don't slide well, can't close properly. removed one window balancer and it has code 33C Z. Can you tell me if it is possible to replace these without taking a window balancer out of e every different sized window, is it possible to figure out what other lengths I might need?
Thank you,
Pam