Should I change the rest of the support hardware?

A home owner from Bellirica, Mass says:
Both are bad. Do I need to change the rest of the supporint hardware. They look fine. 28322800J 28DH90920EAE17 which ever one works. Pivet shoe, etc
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Dave Sr. from SWISCO responded:
If you're thinking of replacing one of your balances, it's best to at least order them in pairs. Otherwise the older balance will take more pressure and break. Inspect your pivot shoes and match them to our catalog of pivot shoes, I can only guess you may have the 15-045 shoe but if they look broken, then yes replace them. You can always send pictures of your window and it's parts for us to look at and double-check for you.
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