I'm an aspiring spababe out of desperation, as no one here will work on my Superior spa vintage 1997. When I got ready for the washdown in september there were all these 1" o rings in the bottom of the shell. I have unscrewed several jets and either can't find any missing or cant loosen the jets. A) How could they just blow off? B)How badly do I need them? I have no owner's manual so you're my main resource. Thanks

The o-rings probably blew out thru the jet openings. This is typical of what happens to some of them. Now, if you don't like the way your jets are working, then you'll need to disassemble and fix them with the missing o-rings or replace the jet internal assemblies altogether.