There's been a lot of talk recently about the usefulness of the SAK models with saw blades. So, I found my old one from Boy Scout days and discovered that the saw blade was pretty dull from all the sawing I must have done way back when. In fact, there was still 15 year old wood lodged in a few of the teeth! Does anyone know if this can be sharpened? Can it send it back to Victorinox? Can the blade itself be replaced via user disassembly of the knife?