I won a mission 2.0 a couple weeks back, had it drilled and it didnt require a balance hole.  I went to practice with it, and it was flaring between the finger holes.  I took it to the pro shop that drilled it to show them, and they decided to put a balance hole in it to the right of my fingers.  This helped a little bit as it moved the flare rings to just barley over my middle finger.  They told me it needed a little bigger hole to get it off the finger all together.  Well we did that and now the ball is just dead.  It has absolutely no backend at all now.  Is it possible to plug the balance hole to restore some of the backend?