[C320-list] leak revisited

[wflowe3 at aim.com]

 still have a pesky leak from somewhere aft into the bilge. I'veeliminated the aft water tank (drained with no change) and have prettywell verified that it has something to do with motoring.  The leakstops after a few days away from the boat and begins again after a dayof sailing with motoring in and out of the slip.  Then the leakdribbles for several days before it quits. There is no antifreeze in the water. Other than the packinggland, anyone have other ideas?

Thanx
Bill