Bought demolition man last week. Second pin ever and met the person 1/2 way. Machine is in very good condition and we exchanged several messages/pictures before meeting up. When we did meet up though, he told me about this "check switch 36 trough error that doesn't affect game play." I ended up buying it for $1,950 anyway. The machine plays fine and it doesn't seem to affect gameplay but I have this feeling in the back of my mind that it might be a big deal that I haven't figured out yet. The seller has been responsive after, so hopefully my gut feeling is nothing. Time will tell, I guess, but I do plan to no longer meet sellers half way so that I can see the games in action first. Regarding the switch 36 error, I just need to figure that out then I'll feel better