We just purchased our catalina 30 and it seems to be taking on water at about 3/4 gallon a day. I've done my best to trace the source of the leak and it seems to be coming from directly under the fuel tank. I can't find any signs of it travelling down the hull anywhere, it just seems to be coming up through the hull. When we first bought it the base of the shaft strut had cracks in it which I ground down a fair ways and filled it with marine fairing compound and when we hauled it out to have some other work done (2 weeks after initial launch) the crack did not re-appear. But it seems to be coming from that area, any ideas?Thanks...