I have really grown to like the Pioneer Rancher for EDC. I find myself going back to it time and time again. The large pen blade I only ever use for peeling fruit and slicing it down to bite size chunks for my 1 year old daughter. A problem that has developed is the large pen blade gets very tight. I am always sure to wash the blade under cool water and I have tried 100% mineral oil delivered on a match for just a drop of oil, and yet the knife continues to have a grinding sound and be very hard to open. It also will not snap closed any longer... i have to push it closed before it slide back into my pocket.
Should I send this knife back to Victorinox to work over or is there something else I can do to clear the funk that has apparently taken up residence in the main blade joint?

Should I send this knife back to Victorinox to work over or is there something else I can do to clear the funk that has apparently taken up residence in the main blade joint?
