Nonstop, thanks for the new information, I had no idea that there were special tools for balancer installation. I have been guilty of installing the damper using the bolt. I didn't install this one, but makes sense of why it broke/stripped.
Got my building insulation inspection today, "good to cover", have a couple of days to clean out shop before drywall arrives. Will attempt to remove bolt, do leak down test on cylinder (regardless of bolt issue) and see where to go from there. If cylinder/valve holds pressure I will be a happy camper.
Again thanks to all for advice and support
