I have my games in my garage where it has started to get rather cold at night. On one of my games (an 809), the multiplier started acting up. Rather than resetting to the single coin award when the first coin is inserted, it resets to the second coin and then goes to the first coin award when a second coin is inserted. It then will continue as normal (next coin it advances to second, coin after than it advances to third, etc). It wasn't that cold last night and after playing a bit, it started to reset correctly. Another of my machines also acted up but only briefly. Both machines have been working great just before this cold snap and both seem to be okay now that it has (temporarily) warmed up a bit. I'm assuming that this is just the machines not being designed for use in cold garages and as long as I warm up the garage when I'm going to play, I should be okay.