Thanks for all the comments so far. At the moment I am exploring the option Duncan mentioned but Chris identified. I'm talking to a local metalworker who is familiar with working on fuel tanks about removing one the end of the tank and fixing the baffle back in place. I don't like the idea of a rattling metal plate being in the tank (although it probably has been there for some time). We haven't had fuel starvation issues but we tend to make sure the tank being gravity fed is reasonably full.
It does look as though the tank is soldered (not braised) although I am leaving the "expert" to sort that one out. Also, I'm taking the opportunity paint the scuttle behand the tank and replace the felt padding I found behind and below the tank.
It does look as though the tank is soldered (not braised) although I am leaving the "expert" to sort that one out. Also, I'm taking the opportunity paint the scuttle behand the tank and replace the felt padding I found behind and below the tank.