Hi guys, I have a Lord Matic Special 5206-6060. The crystal is a bit scratched and I want it changed in my next servicing. I understand the official part is 285V03GNS0. Based on my understanding, this is a hardlex crystal that is 28.5mm with a tension ring. Would any other 2 to 2.5 mm thick 28.5mm crystal work? Are there any practical downsides to this?