Have not used X-Tol for more than a decade. Was one who experienced the Sudden Death of the developer - with a 5 litre pack. Never used it again. Part of that was moving completely to 8x10 and no more small format film at all in B&W. Now have a newer 120 film camera for square format and will be shooting B&W. What's the verdict these days on X-Tol. My use and old notes are all diluted 1:3 which was recommended when I was using it before. I see Kodak now does not have that information and only goes to 1:2. Any "sudden Death" reports lately? Any rational reason not to try the developer now?