A crazy thing happened today. I went down to the boat to test fit replacement cowel vents. Not only did the cowel vents use the same bolt pattern, the new hatches had zero leaks! I honestly can't remember ever going down to the boat and not finding an issue with recent work or having a new part directly fit without having to drill new holes and fill the old ones. Would have been even more satisfying if I had refinished the teak this summer, but you can't have it all.