So I have read the articles and watched the videos and I'm a bit perplexed with the timing on my 1919a4. I have an adjustable lock frame and I'm adjusting the timing to approx .072. However when I adjust it the way the articles and videos say to get it to drop at .072 with the gun assembled I have to set the trigger at approx .042. Do I have something a miss in there or what am I missing? The gun runs great when I adjust it as above.