Ian
Really interested to know how you get on as i have a 365GL and am looking to change all seacocks next year. However i think i read a previous post on here or possible somewhere else that you cannot use the TruDesign valves on the D365 as they are all too close together. I know one of the answers above stated it again, but i also read it somewhere else as well.
Please post what the result is, as I’m going to have same problem
John