Thank you to MiiCoffee for both their videos on resetting the zero point! If this doesn't work for other folks, perhaps you ran into the same issue I did: I let someone else use my grinder this morning and the zero point got messed up. Not sure how it happened, they've used the grinder before so they should know the drill, but something happened and the grinder was grinding more coarse than previously. I adjusted the zero point and was still pulling shots way too fast. After attempting to zero multiple times I removed the top burr carrier and noticed that the ring bearing was slightly raised (these are the bearings in the smaller hole, not the gasket/pressure ring). I pulled it off and cleaned out a bunch of coffee that had worked its way into the bearing, re-assembled, and noticed the zero point was a bit further than it was previously and the chirping was more consistent at that point. The grinder sound was much more pleasant than before, the grind was finer, and the next shot I pulled actually took too long! If this video didn't fix things and your chirping feels like it's on a ~5 notch range instead of being very tight (~1 notch), re-zeroing doesn't feel as fine as before, and shots pull way too fast even at a 0 grind, try the steps above to clean the ring bearing.
Thank you to MiiCoffee for both their videos on resetting the zero point!
If this doesn't work for other folks, perhaps you ran into the same issue I did: I let someone else use my grinder this morning and the zero point got messed up. Not sure how it happened, they've used the grinder before so they should know the drill, but something happened and the grinder was grinding more coarse than previously.
I adjusted the zero point and was still pulling shots way too fast. After attempting to zero multiple times I removed the top burr carrier and noticed that the ring bearing was slightly raised (these are the bearings in the smaller hole, not the gasket/pressure ring). I pulled it off and cleaned out a bunch of coffee that had worked its way into the bearing, re-assembled, and noticed the zero point was a bit further than it was previously and the chirping was more consistent at that point.
The grinder sound was much more pleasant than before, the grind was finer, and the next shot I pulled actually took too long!
If this video didn't fix things and your chirping feels like it's on a ~5 notch range instead of being very tight (~1 notch), re-zeroing doesn't feel as fine as before, and shots pull way too fast even at a 0 grind, try the steps above to clean the ring bearing.