Good on ya Marty !
Daniel - trust me, it happens to the "best of us". It is almost like the machine is trying to REFUSE to leave your gamesroom. As mentioned, it is much better that the issue was in your gamesroom, than the new owner. First impressions often lead to the buyer being a repeat customer.
Chin up (watch that clothesline), and enjoy the games. Step away if it is taking up too much of your time. The machines will always be there when you return.
