I have had and used and loved a number of Buck Knives through the years but never really paid attention to the steels they were made of. Well I currently was currious and looked up 1 of my gator fixed blades and it said its made of 420 hc stainless. Well also read that they are making them with 420 hc and not 440a anymore. I was curious if anybody knows when the switch was? Just a curiosity for me. Thanks for any info.