Sure they say on model railway forums that cascamite changed formulas, a good while back now, like so many things it's apparently not the same as that old tin we all remember sitting on the shelf. It maybe changed name also at one point but might have changed back. In any case I've heard it's quite different from the old stuff. Nothing substantiated, just remember allot of posts when I was into model railways again before returning to the mother hobby a few years back.