Buy a LevRG. My track dropped a few inches.
On a serious note, changing your track is not something you can do easily. I track high and I can spin the ball all I want and my track won't drop. So I'm not quite sure how to lower a track. To get more side rotation, consider pulling in your pinkie and spreading your index. Or if you feel comfortable trying this, tuck your pinkie. I notice more revs and more side rotation doing that without changing anything else.
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Penn State Mens Bowling Team