The hatches on Adesso were built by Atkins Hoyle and were showing signs of wear and tear. The two large hatches had been recondition at great expense but still were missing some of the opening hardware. All the other hatches needed seals, new Makralon and some of the hardware replaced. The decision to replace rather than repair was Atkins Hoyle no longer made the 10 by 10 hatches that are used over the galley and forward head. One of the 10 by 10’s frame was bent and another had broken hinges. In the end it was also cheaper to replace than repair when shipping etc, etc, were all added in! Lewmar Ocean series was my choice for best value and quality. I must say that we were tempted by the stainless Bomar hatches but the price was too much for our budget to bear. This was a relatively easy job as the Lewmar sizes fit without any modifications and the old hatches came off without too much swearing. My favourite invented tool is a thin metal drafting ruler that I sharpened the narrow end. I could lift the hatch with a pry bar a little and then run the ruler in to cut the sealer. We have been VERY happy with the result. Again one of the surprise bonuses of doing this job was the light that new glass let in not to mention the friction hinges.