I recently cleared my Space Mission play field and rebuilt all the eject holes, pop bumpers and flippers. We started playing a couple of weeks ago and I noticed the eject holes are shooting the ball into the air as it comes out. The ball actually hit the glass once. This has created an area of dimples in the play field a couple of inches in front of the hole. The pictures don't show them and they can't be felt, but they can be seen when you look from the right angle. I started to investigate and discovered my transformer was on the hi-tap terminal. I changed it and now it doesn't hit the glass, but the ball still gets airborne. Is there a way to weaken the mechanism or is this just the way it is?