Most of my equipment was drilled when I was using a Robby's wrist support and the Ebonite support with the extended finger.  I stopped using these supports a couple of months ago and now it feels like I can't get the ball out on the lane.  More tape in the thumb hole helps a little but also causes me to sometimes hang in the ball.

I was wondering if having a slightly short span would cause this problem? 

 

Your wrist is now in a different position more than likely, causing a different release angle plus the restriction the wrist supported created changing your grip...get it reevaluated