Does anyone Know a method for removing water stains on top of the gold wash etching while preserving the gold wash etching? I am stumped. I have gone around the gold wash etching with MAAS and removed as many stains on the blade as I could without touching the gold wash. I've tried delicately wiping the water stains on the etching with vinegar, no success. Would a few delicate rubs with a high grit sand paper do the trick?