I bought a new gun, Glock 17, and my 1st hundred rounds at 10 yards are about 4 inches to the left. Unlike my golf clubs, I think the issue might be me. I have read a ton of good info here but I could use a little help on where to place my left hand. From what I have read it sounds like my left hand is the problem but correct me if I'm wrong. I put my left index finger on the trigger guard and tuck my thumb under my right hand thumb. I try to clamp down on my right hand but it still feels like the left hand is just along for the ride. Any advice would be appreciated.