Please remember bxxpeace, the views may not be from this forum's members that advise, but from other visitors looking for advice relating to a similar subject on a search with relating keywords (tub, drain,cylinder, etc.)
Also, most forum members are simply enthusiasts and professionals that are volunteering their time to help. We do not get paid for our time. We have jobs, families and other personal activities in our lives, but still remain willing to help when time permits. I just saw your post today while checking recent updates, but was working and got called out for service.
I did not see an attachment for a photo, which would help in identifying the cylinder, but as I said, I was at work and unable to open the thread.
If you post a picture we may be able to help.