Had a 27. It leaked through the bow rail mounts. It came down behind the the header above the bed. It was a little tricky to find. Found it, sealed it.

leaks Su-------------ks when you can;t find them

Mine is also leaking but at at the wide end of the V berth. I think it is the windsheild.( 99 42 Lightning ) Can I just silicone the fastening screws?

I have had a leaking problem for some time. I just found that the water tank had a small hole at the seam where it was welded. When the tank was filled more than 1/2 way it would slowly leak out - maybe 8-12 oz per day.