I am having a bitch of a time getting this tank recertified. No one around here will even touch it. Thing is clearly stamped 1992. so everyone I spoke to said they can't do anything on a tank older than 12 years. There was this one shady welding guy who said he could do it "this one time"...
I called Manchester, and customer service over there said the replacement tank for the Weber grills is sold at ACE Hardware, the part # is 10054 for the new style and #10052.3 for the quick disconnect. I asked if the tank had a flat back on the top and she said yes, both have the flat back.
Here's the link, but it is $55. Of course to save money I'd have it shipped to the store, but at this point, its looking like I'm gonna have to bite the bullet and buy a new tank if I want to use the 5lber. Unfortunately the picture of the tank doesn't show the flat back.
http://www.acehardware.com/product/index.jsp?productId=21226816Another option is that I have the adapter to refill 1lb tanks from a 20lb, but I don't know if you can do it the other way around. I would have to put the 5lb in the refrigerator overnight to get it really cold and hook up a room temperature 1lb tank. The difference in temperature pulls the LP out of the warmer tank into the colder tank. Works great with a 20lb tank into a cold 1lb. Anyone ever try it backwards and can you do multiple tanks?