Guys I've had this rat 2 for a month and been working it every night, disassemble and oiled with the super oil and I swear it's tighter than when I got it. It opens fine after I manually open it, but when if I carry it I don't want to have to use two hands to open it, I've got other knives that don't have this problem. I've got the pivot at just about the optimum tightness, I think, any suggestion?