To those of you who followed my post about producing more revs and keeping my track away from the thumbhole, I think I've found my solution.

I had a lesson this weekend and there were 3 key things we worked on:
1. Following through with my release in front of my body
2. Closing my shoulders for outside/straighter lines and opening them for inside or more hooking lines
3. Standing up slightly more on my approach

The 1st lesson was huge.  It turns out my lift and release was going around the side of the ball and away from my body.  This would cause me to push my ball outward and change the axis tilt of my ball.  This resulted in less revs and not as much turn.

The 2nd helped me greatly with that inside line.  By opening the shoulders just a tad and following through straight up the front of my body I was able to hit my mark consistenly and get enough revs/tilt on the ball to be successful up 4th and 5th arrow.

The last helped me with my leverage.  I'm a taller guy, 6'4 here, and it turned out my crouching took away from alot of my body leverage and angle with the lane.  Once I stood up slightly more I was able to produce a great break point and actually increased my pin action quite a bit.

In the end, my follow through goes straight in front of my body and I'm not coming through the center of the ball, and not the side.  I'm opening my body position depending on where on the lane my ball needs to go.  And I'm increasing my body leverage and area of play with my approach.

Thanks for all your help everyone and I hope anyone having similar issues can benefit from this!