On my gottlieb genesis, my left flipper acts a bit funky; only after holding it up for several (over 10) seconds, there develops a delay between when I press the flipper button, and when the bat flips. Also, with the flipper button held, and the bat up, I can force the bat down, and it takes a good 1/2 second for the primary coil to re-engage, which is very perplexing because the EOS switch on the flipper mech is normally open. So forcing the bat down immediately opens the EOS, so I don't think it's an oxidation problem with the EOS switch. It looks like it's in the correct position too. I'm thinking maybe a bad coil?