Gotta post and run. You will be amazed at how little right elbow bend it takes to cock the left wrist, and how little the left wrist actually cocks! #4 as you probably know is the out of line condition that your left arm reaches relative to the shoulder line. To my way of thinking flying wedges, Right forearm takeaway, extensor action, as well as a centered and stationary head all make the full utilization of the #4 Acc possible. Keep your head stationary and between your feet, grasp your left arm with your right hand and then simply take the left arm up. You will note that the left arm is across the chest and you should feel some pressure between your bicep and left pec. Given that your right forearm is on plane (is it?) and therefore in a bent condition...try to straighten it against the checkrein of the left arm. What this insures is structure for your power package but also the precise degree of right elbow bend .
Stronger? More "turned" to your right? Reaching with your right arm may indicate that you are running out of right arm (right elbow is straightening prematurely) Make sure your right shoulder is properly located down plane at impact by checking it out at impact fix otherwise it will be hopelessly too high (above plane) and in order to "get to" the ball the right arm fires...it runs out of gas...so the right wrist fires!