Fred, sorry for the confusion. I thought you were stating you bought a person with an A-4 and were asking about a Palmer in another boat with a tank issue.
The Palmer is a similar 4 cylinder flathead that was also popular. They stopped production just as Universal did however the Palmer does not have a "MMI" to support cast parts. Many are still running as they had good care. The Palmer is just hard to find parts for now!
Dave Neptune