Cheezywan; I am new to the Redhawk, but, now that I have worked with a few of them, I find that it is a different beast for sure. The "light strike" issue is a common one, and it normally leads to firing pin lenght, spring tension, etc. One thing you also need to check is where the mainspring spring strut goes through the mainspring lever. Make sure the strut is smooth and the end that goes through the lever is rounded...I make this modification and then polish the strut. The hole in the mainspring lever should be chamfered and polished as well, and the ends of the spring should be deburred. I was having some light hits and after reworking the normal things, I found that the mainspring strut was hanging up and draging in the hole on the lever...it was all burred up, and evidently was hanging just enough to cause a momentary glitch when the hammer fell...causing light strikes. Anyway, after I caught that and fixed it, I havent had a light strike/misfire since. Just something else to look for.