Okay a little update... I took apart the grinder a little, took out the upper burr carrier, then the upper burr (inspected, looks fine, very sharp, cleaned it a little), managed to get out the bottom burr (same deal), looked around under there, all looks fine and I can't spot anything amiss.. I tried to get that central nut out but with all my might could not haha.. don't really have that many tools around, tried an adjustable wrench but it was just too tight. But anyway I reinstalled the lower burr, upper burr, and everything. I did however notice that the spring clip you push down to adjust the grind setting is quite loose in there, I actually think it's a matter of that the hole diameter is just too big, so it slots in there but can move around left to right a bit, which obviously affects the upper burr carrier and the stability of the setting that it's on. I shot some photos and did some videos too! Apologies for the repetitive nature of the videos, but just thought I'd cover all bases. You can see the springed clip and how it moves with the upper burr carrier quite easily, and also in the clip where I grind some beans how it does that 'snap back' I mentioned earlier. Not sure if this is potentially the issue... doesn't seem that it would affect the dramatic difference in steps, as even when going between steps they seem quite small in the threads in terms of how much it's adjusted.. so whether this little movement is causing too many inconsistent grinds or it's just not stable to even know what setting it's on I'm not sure... I even tried to wrap some things around the spring clip and put it back in to try and stabilise it (wrapped paper around it, blutac etc) but couldn't slot it in. So whether this itself needs addressing or wrapping tape around the threads not sure. May have same effect. So the photos are of the area where the lower burrs were removed from, and the burrs themselves. One strange thing though, the shot I pulled this morning (before the big stripping apart) was 20.5g in on grind setting 1.4, yielded 27.6g in 35s. Then this afternoon I did the cleaning and reinstalling, and went one notch coarser as the shot was a little slow. Purged a decent amount, about 10 grams (even though I'd cleaned and vacuumed everything out). Same dose on grind setting 1.5 (one notch coarser) yielded 19g in 35s! Bizarre, perhaps I've reset something in there! For tomorrow's shot I'm gonna go a touch coarser and fingers crossed something has been fixed here...
