Those darned expansion tanks

[Tab Julius <tab@penworks.com>]

On my '78B, I am now the proud owner of a replacement expansion tank (for 
the radiator) which I got to replace the leaky old one.

Pray tell, how do I remove the old one?  It's held on by a metal band that 
looks like it's welded on or something.  Is there an easy way to get the 
old one out and the new one in without any pyrotechnics?

Thanks

- Tab