Hi, we bought an O'Day 272 about 2 months ago and the boat is great. We realized that the fresh water supply works for about 3 days after filling the water tank and then it appears that no water can be pumped out of the faucets. This is a manual system with pump faucets. It almost appears as if there is some sort of a break that let's air into the pipes so that the vacuum slowly disappears. Does anybody have any recommendations of how that problem can be resolved? The faucets work fine when removed and tried in a water bucket. Thanks for your help