When the EOS are making good contact, there is high power to the coil. When the contacts break, there is low power only to the coil. If the EOS is not making good contact from being worn out or out of adjustment, there is essentially no power at the flipper capable of hitting the ball with any authority. Or, if the EOS breaks contact too soon on the upstroke, it can also make the flipper seem sluggish. Keep in mind though, if the EOS does not break contact at top of stroke, you are going to blow your fuse if you hold the flipper button too long. So it is important the are adjusted correctly on Sys 3 games. Hope this helps.