I was doing a little repair on my 336 compression post area at the deck to keep a very minor drip out. I was unable to get a good look at how this area is configured and never have seen it with the mast out. Can anyone please describe the thru deck arrangement on the 336 above the compression post? Is there a flange of sort that the mast goes over? How is water drained from mast? Is the core in the deck exposed to any leaks? All I did was fill the void around the wires where they go into the mast with the expanding foam stuff. I hope this is not the wrong thing. Don