Hi, my mast step is leaking, so i have installed an inspection port to try to fix it from the inside. When i poor some water down the mast step i can see its leaking from the bottom, but it is also about half an inch of water left when it has been standing there for some hours. My problem is the donut thing around the bottom of the mast step, i have read on this forum that it should be removed and you should poor some epoxy down the "gap" instead, but i don't know if this is true? I tried to remove some of the donut, it worked a little bit, but to remove it all would take many hours of hard work. Is there any good techniques for this? Or could i just leave the donut as is, and wrap some layers of fiberglass around the mast step?? And maybe poor some epoxy down where it is leaking from? Never done a repair like this so i appreciate all the help i can get Also uploaded some pics so you can see where its leaking from. I think the boat is from 1970-1980.