Pivot shoe and possible pivot bar replacement

A quick learner from USA says:
Hi! We've been having window issues for quite a while. Our windows are vinyl and were installed on 2003 by a company named Qualitex. They are now out of business. Amerimax is the company that use to come fix them. I'd like to do this myself since our warranty has expired. Here's my problem... The metal cam in the pivot shoe is broken. Not sure if I have to replace the whole thing or if I can replace just the metal cam, if that is even possible. Also, the pivot bar keeps breaking. What replacement parts do you suggest and any tips on installing them?
Coil assembly
Profile picture of Paul
Paul from SWISCO responded:
Your pivot shoe looks like our 15-177, which is designed to go with the Series 152 coil spring. The pivot bar looks like our 26-316. Please compare this hardware to your own to confirm.
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