Dyad window operators

Hello, I have 25 year old pvc windows (glass replaced 5 years ago) with dyad 5" operators. They are kind of hard to open and I had three operators break this summer on the DYAD case. I also have a couple that are stripped at the point of almost fully closed. My question is whether there is a conversion to a better operator that you would recommend or is it best to replace in kind. Thank you.

Sure, thank you, photos attached.