i bought a 1966 tri hull starcraft..took it out seemed good ..14 ft.. put all new plugs in it.. my question is ..the valley in the bottom back of my boat where the bilge is..theren were two holes on the side of this valley..put new plugs in them..pulled them out bout week after taking the boat out ..and yes stuck my fingers in there and it was wet n grimey..has moisture in them both..is this bad..