Thanks for the update on the stove replacement. I do have the new style boat, #507. I looked at the 4100 Origo and it looks like it will some doing to get this to work.
I am hoping to have the boat, and myself, ready to begin one design racing next year. However, it is very expensive to make so many minor variations to meet some of the rules. Any comments would be appreciated as the upkeep/costs of the J30 grow as our boats age. 18 lbs seems a little overboard considering the disparate weight of water, fuel and not to mention the crew.