The system was only installed five years ago, so I don't think it is due to have the bellows replaced. The leak is at the forward end where the bellows meets the stainless steel collar. I tightened the two hose clamps that are holding the bellows in place at the forward end, but that didn't seem to have any effect. I'll check out that link on the PYI site. The boat is in the water, so repairs will be minimal at this time.