[Digger]

OK, now the one-way vlaves are getting sorted out, I need a couple of bits of info.

How many do I need in a dual couterlung arrangement, and where? Where are they on your units, why have one in certain places, and can it hurt to have too many (can't see WOB going up much with a couple more than I need really) and also what happens if there are too few?

Can I get away with one either side of the mouthpiece? If so, great, if not, why not?

Thanks again guys. More questions I don't have the answers to. Isn't most of this in a book somewhere???

Digs.