Hey guys, this might end up being hopeless but does anyone have any thoughts on finding the schrader adapter / washer for a Silca 323.1 chuck? I was recently given a nice older Silca with the 323.1 presta/schrader chuck but without the schrader insert =/ I may have a go at 3D printing or otherwise fabricating one, but if anyone knows where they can be found I'd appreciate the info