I recently noticed a "smile" at the aft end of the keel to hull joint of my '83 hunter 25. The shape of the keel looks like it would produce a severe rotational force putting a lot of stress on the after section of the keel. I know from reading other posts that thr smile usually occurs on the leading edge. I've never struck an object with the boat so I know that isn't the issue. I'm worried that she is just getting long in thr tooth. I've read that stainless steel connectors can look just fine on the outside and be rotten within the fastener. I'm now noticing some water in the bilge but this could be due to recent rains (I hope!). Questions: Should I be worried about bolt corrosion? Did Hunter use 316 stainless for the keelboats? Going up to the lake Saturday to monitor thr situation and take pictures. Thanks!