First of all, if there is a better forum for repair ideas and tips, could someone let me know? I'm down to the last few minor problems on my pin, and one keeps coming back. My right flipper keeps coming loose. There are 2 allen set screws holding it in place, and no matter how tight i make them, it loosens right up, during the first play. Should I try some lock-tite, or do you think something is worn out?The machine is a Gottlieb Big Hurt. Thanks.