You need POO POO PEGGIE. Unfortunately I don't have her email address. Someone here must know it. She is America's acknowledged expert on marine toilets. You might locate her in one of the sailing newsgroups. She will tell you who stocks what and where (Europe included)
Thanks, Byron. Had a great 6 weeks in the Keys and Bahamas.
And what a pleasant surprise to find the forums back up and running in this much-improved format.