Sorry to reply to my own post :-[. I thought of another bit of info that would be useful, whether your hopper/doser lid is an innie or an outie 😉. The lip of the Macap lids fit over the outside of the hopper and doser, whereas the Rocky lid lip sits inside the hopper. So if the lid is an outie, the inside diameter (ID) of the lid, or if its an innie, the ID of the hopper/doser. So get your rulers/vernier calipers out and start measuring 😉. Thanks again, Steve