I am the recent proud owner of a new Strider SMF spearpoint. I have had it for 2 weeks and have not cut anything of substance and have noticed that it is relatively dull. I have numerous Emerson's that I use hard and have never sharpened and they are sharper than this new knife. Anyone else have this problem with them dulling quickly? What is the best sharpener out there for a Strider? I know they are beefy and that not every sharpener will work. Thanks in advance.