I have acquired a great old strop. While it is basically nick free it has gotten a bit stiff and not so supple. My plan is to scrub it clean with saddle soap and let air dry. I heard tallow based soaps also work well for this. My real question is what to do with the canvas side of the strop? It seems real stiff and hasn't much weave showing like it's caked with some sort of crud. I'm not sure if or how is the best way to clean it. I'm leaning toward saddle soap and elbow grease.