Bambu Lab X1 spacer for spool holder - improved for perfect fit

This is a remix of the Spacer made by @Coat. It's version for M3x30mm screws. Bambu spool holder has some ledge which prevents it to fit perfectly to the spacer. I added: space for ledge a slightly larger screw hole to make it easier to mount increased size on 2% because it was small for me (I printed in PETG) added foot to decrease pressure This holder supports usage of holder native way and upside down if you're going to use well-known Spool roller from @thrutheframe ( https://www.printables.com/model/278580-bambu-lab-spool-roller ).