Some more updates, the interior basket is only 15mm high, exterior still 22.5mm, moved the locating positions inward to fix onto the internal sleeve, so inserts are no longer required in the yacht to hold the unit down. Exterior can still be removed independently from the main unit for easy cleaning. I've modified the dynamic sleeve locating position which allows the unit to become more compact, it only increases total part complexity by a very small amount and part count by 1. Now it would be possible to even do a flush fit in the interior, maybe if there is enough time that will be in model 4 :)

Anyway I cleaned up the switch some more, it's a lot sleeker looking again like in the first model.

I tried to show with a few different materials. Thank you everyone for looking at my other models :)