Weird problem. A twenty five cent coin mech has suddenly started jamming up when US quarters are placed in it. I'm sure they used to be OK, or maybe it's the first time someone has put US quarters in? Anyways, when a US quarter is put in the machine, it neither passes through to add a credit nor rejects. It just sits in the mech, and causes a log jam for the next quarter. Kind of a PITA. I think it's a diameter thing, rather than a thickness thing. The US quarter is only a fraction of a mm wider, but it seems to be enough. Is there a way to fine tune a CAD quarter mech to also take US quarters?