Let me start by saying I am new to this site(love that it is here) and owning a Sea Ray, but I have had a boat before. I recently bought a 1975 srv 220 with a cabin and 302 mercruiser which I have been getting ready for the water. While cleaning I have noticed 2 things that really puzzle me. 1- when you step down to go into the cabin there is what looks like a threaded drain hole so water from the cabin(if any) can drain. When I look into mine it is full of water. I have tried raising the bow up but it doesn't drain. Any ideas why or what I can do? 2- on the engine it says to use lead gas only. I know there is lead substitute but have read that I don't even need to use it. Some swear by it, others say it's a waste of money. How do you mix substitute? Any help would be great...Thanks!