When did the Buck Cadet change from a "2 spring" to "3 spring" pocket knife? I personally like that change the knife is still the same size but alot more sturdier. The second question I got my present Buck Cadet in 1997 and the blade profile is what I think is a wedge shape. I have looked a Buck Cadets recently and the blade profile is more semi-hollow. Again I like mine because there was enough metal on the blades so I could shape and sharpen them for my needs - the sheep's foot was sharpened to a razor edge for whittling, while the sprey was reshaped to a pointed pen shape and also sharpened to a razor edge for detail whittling. The large cllip was kept the same and does all the usual pen knife chores. Any way to the Buck family you make a great product. It is nice when a family of faith can also do so well in th world of business.