My vinyl windows wont stay up

A contractor from Madison al. 35758 says:
The vinyl windows I am looking at will not stay up. I cannot find any broken parts. Is there an adjustment for this. Stamped: (01/3) UNIQUE 27-C-30
User submitted picture of channel balance.
Profile picture of Paul
Paul from SWISCO responded:
Thank you for posting. I think that either the spring is sprung or the locking device on the bottom is broken. Either way, you will need a new balance. Please take a look at our S795-28 channel balance with the 28C stamp option.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at