Ganzer,
I have nothing critical to say about the KOA. I processed 21 animals with that blade before I ever considered it needing a hit on the steel. When the season was over I sent it to KOA for a resharpen. It cost $8 & came home looking twice as good as new. Have been extremely happy with it.
But, I have experienced the condition you mentioned with other premium blades in my bag. I need to check to see what the material is.