I was at the range with my step-father, who is retired military and of course a better shooter than me. I noticed his grip seemed a little weird and asked about it. He said that puts his index finger along the frame and pulls the trigger with his middle finger. He has a G26, and his "short, sausage" fingers don't wrap around the grip good enough he said. I decided to try it out, and sure enough it stopped my problem (whatever causes you to shoot low and left consistently), and all of my shots were true. Now since I use my G19 for concealed carry, I'm just not comfortable drawing from a holster like that. So I'm wondering if there is some other way to correct my problem. Note: I'm currently using the default backstrap that came with the gen4, so I'm not sure if there is a smaller one.