Jeff - if you want to stick with the "original" stuff, look at the Seaward website at this link and see if they have a suitable replacement. http://www.seawardproducts.com/ (look on left menu Gas Stoves)

I have a different solution on Rhapsody. We have one of the single burner omelet stoves you see in restaurants bolted to the underside of the wooden cutting board. This is flipped over when we want to use the stove. It uses disposable butane cartridges and doesn't have the hassle of the propane locker, plumbing and solenoid valve. Whenever we cruise I just pack a few butane canisters. They are light and easy to pack.

If you go the Origo route, the Model 4000 is supposed to be as close to a drop in replacement that you can find. The non-pressurized alcohol stoves are pretty good. I'd stay away from any of the pressurized alcohol units. I've used them on other boats and they are a pain in the neck.

Bill