Did a test and it can be done with care...
1: If the hopper has parallel sides.
Then I have a good chance of cutting and re machining the step to allow the same lid to fit.
2: If it has tapered sides, then if one has a lid that is of the size required.
Then with care, one can cut down and machine a step to suit the new lid.
3: Eureka Mignon Elettronic is a bit of a pain as it has a square hopper.
But with care, if you have teh full sized hopper, it can be cut down if you take care and use a very fine tooth blade. And lots of patience.
PS. Stuffed one, but was lucky as the guy had a Tupperware lid that fitted and he was happier with the outcome.
Anger on Hoppers - Not baby Hrasshoppers ;D