I recently got a HEST 2.0 folder, and I love it! However, I am having trouble putting the edge on it that I am used to. All my other knives (kershaw and spyderco) I can get "hair popping" sharp. I can put a very good "user" edge on the D2 that seems to last really well, but not an edge like the others. Is this just the nature of the beast? Am I expecting too much, or could I be doing something wrong? I am using a Lansky at 20-degree (btw- I love my 4-stick turnbox!).