Replaced my nozzle and filament won't load
I recently replaced my nozzle with a 0.25 mm nozzle to get more detail on some finer prints. I have Mk3s with MMU2S upgrade.
Now, when loading filament from MMU2S to the extruder, it will send filament down the tube to the extruder, then pull it back. This goes on a few times, and then stops. Sometimes I get an error, and sometimes the extruder thinks there's filament there and starts a phantom print. I think I have everything rotated back into place properly. Any ideas where I should start? I don't hear anything strange. Could it be banging against the heatbreak or something?
Thanks for your help!