Hello. I am new to the pinball machine world. Just got a hold of a Twlight Zone machine, but I need help with a repair. The machine loads, and runs fine, but when the ball goes to the bottom, it won't load back to the plunger area. What I mean is the balls will just pool at the bottom, I see the mechanism that is supposed to send it up, but it is stuck out. I tried a little oil, but it just moves one time, and stays stuck open. Any help would be appreciated. ED
Also (Dumb question for most of you) what are the "ROM" upgrades for?