Gridfinity bins to hold the excellent Embedded Magnet Dispensers. I just made the two i needed (6x2, 6x3). The tolerances are pretty tight fit both on the dispensers and to get them to fit in the 4x1 gridfinity so ymmv.
sorry it was too tight a fit for you - I think it does depend on the particular printer and tolerances. should it take it down? I don’t want people wasting time and filament. though all but yours was a 4-5 star so idk.