Doug an update on my dragging brake. After changing the brake master cylinder the problem still persisted. The brake booster was the cause of mu problem - replaced and no more dragging brakes.

 

Thank you. I had our Captiva brakes worked on by a mechanic, so I think the issue is resolved. I put new snow tires on for the Massachusetts winter, if we get a winter.
I did cut open the brake line in the photo but I didn't see it was blocked.