The Chinese burrs definitely improved their consistency over their break in. Just checking my order history since I got them and when they settled down and I think it was probably closer to 7KG that got them there.
I keep a dated record of each setting and recipe for every bean I buy and all of the roasts that I still regularly use have required a finer setting from new to seasoned. For example, Rave Fudge Blend required a grind setting of 21.5 pre-seasoning and now are at 18 and stable. Similar with their Signature Blend. Similar with lots from Darkwoods and Wogan.
To be clear; I’m not trying to convince you or anyone else about breaking in burrs and am certainly not ruling out that I have this wrong and something else is playing out here. That’s definitely possible. It’s just that all of the evidence I have points to the opposite and I prefer my judgement to be informed by evidence rather than ignoring it and following some influencers on instachat or some such.
Anyway, who knew there were so many little roasters in Hertfordshire? Turns out there are loads.