Saxman Try some Formula 44/40 gun blue. For years I tried perma-blue and all I got was streaks and disgusted. If possible, heat the metal in an oven till it's pretty warm, apply,let dry,wash off w/water and re-heat to start over. It will take more than one application but you will see the difference immediately and that always gives me the patience to apply many more times for a deeper blue. When you are finally satisfied be sure to coat well with WD-40 and keep an eye on it because it will rust. Apply plenty of WD. If you are like me you will be astounded after so many years of trying to blue with "good products". Kix