I have 2 Cases and 1 Kabar folding hunters that need a good cleaning. The blades don't snap; too much dirt and grim in the pivot. I've used WD 40 which loosened them up a bit, but I need to clean or wash the dirt out somehow. So before I screw something up myself, I'm asking the pros on here. And also what is the best lubricant to apply to keep them working smoothly and rust free? Thanks in advance guys!