if you're right handed, no part of your left hand on the left side of your life-line should touch the grip. at the absolute most the left edge of your grip should be touching that life-line, but that's really not got your hand rotated enough. one of the biggest things to master is the complete relaxation of that hand. there should be no tension in your bow hand. from the second it touches the grip it needs to go dead. you can't tense your hand, straighten your fingers, squeeze your thumb, tighten your index finger, etc., the same every time. but you can completely relax your hand every time. when you do this you can visibly see your pin settle down. i personally put my lifeline at the base of my hand low on the grip when i'm setting my grip. then slide my hand up and roll it forwards into position. this leaves the bow going thru the soft spot between my index and thumb and across the meaty section on the pad of my thumb. the bow is actually a fair distance from my lifeline. at full draw this leaves the bow nicely balanced left and right, and my bubble level without the shelf of the bow putting pressure on my index knuckle or thumb. i could never acheive this consistent grip until i took the round wooden grip off my riser.