I have the first production game (#12). Like many, had only a few boards go out, very early on. . Once I put in maybe 3 of the buffer boards, never had a problem. I'm so reluctant to post this cause.....don't want to wear out my luck.
In any case, I've read so many posts about early games, but once my issues with typical adjustments and even replacement parts, my game has been solid for years. Oh boy...hope this is not a jinx.