Sounds like the bladder inside the seat is leaking.A riding buddy had the same problem with his Zepplin seat,he removed the staples underneath the seat that fastens the leather to the seat pan,found the leak in the bladder,used a tube repair kit to seal the leak and has not had any more problems with his seat.Hope this helps you.
Thanks.. that may be the ticket [sm=exactly.gif] hard telling what repairs would cost [sm=smiley21.gif] I purchased the bike with the seat on it. really it's not all that uncomfortable like it is. just bothers me it doesn't work [:@]