Worm gear is stripped

Thanks for posting. You will need to remove the operator so we may see a bird's eye view of its entirety, including the link arms. From there, we can narrow down possible replacements. Many thanks.

These photos are a huge help, thank you! I recommend our 39-031 and 39-032 casement window operators. These match in both size and design.

As for the lock, you have a match for our 38-075.

Look these parts over and let me know if you agree with my assessment, or if you had any questions.