GPX Turkish/Ultrafine Discs
The GPX Turkish/Ultrafine discs should only be put on GPXs with an Ultrafine rotor. While it is possible to install Turkish/Ultrafine discs inside a model with a standard rotor, the auger design of the standard rotor risks pushing too much product/coffee into the burr housing during grinding. In this case, liberal use of the slide gate to throttle (i.e., restrict) the flow of product is strongly recommended.
Ideally, customers of a standard configured GPX (with a standard rotor) who wish to use Turkish/Ultrafine discs, should also purchase a Ultrafine rotor as well; also we recommend taking off the dechaffing arm.