On the same note (since this used to happen pretty often), if a coin gets stuck in the GF machine, DO NOT put more in. Hold down the coin release lever with one hand and smack the panel with the other. The coins should pop out within a couple of smacks.
Random question about the other games there, does AI still have Shikigami No Shiro II and Border Down or did they switch out the cabs?
They had Shikigami no Shiro II last time I went, but that was at least a month ago. I really hope they'd never take it out, that game is fuggin' awesome D=