The hull on my Benteau 323 of course is curved on the bottom and the iron keel(not encapsulated) is flat where it meets the hull. Subsequently there is a small gap between the hull and keel forward. Beneteau suggests closing the gap (caulking) with 3M 5200. I did that years ago and it has held well. I wonder how important it was to do that. Was it primarily cosmetic? Was it important to protect the keel bolts? If it was important to do, why didn't Benteteau do this when they manufacture the boat? I think this subject has been talked about in the past and I think Catalinas have a similar issue(I think it was called the catalina smile). I was just wondering as I wait out the winter in Illinois. Secondly, my boat has a Yanmar 3ym20 diesel engine. I have not had any problems with it. It only has alarms for low oil pressure and temperature, no gauges. I was contemplating putting on an oil pressure gauge and temperature gauge. Asking for thoughts or opinion on installing gauges.