Does anyone have problems with an inconsistent ball launcher, and does anyone know what to do to fix it? Mine is failing to shoot the ball from the shooter lane all the way up the wireform about 10-20% of the time. I tried a new coil sleeve and new plunger assy. It seemed to get better for a while but that may have been my imagination. It does look as though the plunger is striking the center of the ball as it sits in the shooter lane. This especially sucks when you get into MB. Any thoughts?