A while back I received a lot (5) of straight blades from ebay. They all need some good cleaning as well new scales. Some of the blades had some minor pitting on them and in talking to my dad he suggested that I try NAVAL JELLY rust remover. I picked some up at Home Depot, bent up an old hanger to use as a stand and gave it a try. Had some o.k. results but the main issue is that when it came time to rinse the blades (i tried this on two different blades on a couple different days) the steel had become almost black. I was able to go through and sand the blades back to being "steel" but it kind of killed the original intention of buying the stuff. All in all I was looking for something a little more aggressive then MASS or FLITZ but if I need to reclean the blades twice then that kind of kills it for me. Any ideas why this might have happened or another product I might want to give a try?