OK, quick update. I’ve cleaned the niche and when doing so I noticed that the 10mm bolt was loose. I’ve given it a good clean (and it needed it) and now it’s all back together. The top part seems more sturdy than it was, but time will tell if it has rectified the issue.
One question though - trying to dial it back in is a but of a nightmare. I’ve done 4 sink shots because the grind was way too loose on the 19th dot. I had to take it all the way down to the 10th dot just to get it to pull a shot within a semi reasonable time and even then, it was 10 secs too fast. I’ve now set it to the 8th dot for my next go this afternoon as I’m running out of beans until the postie delivers my next batch.
Is it normal to have to go down this many dots? I thought it would be out by a little bit and I’d have to tweak it back towards the 18-19 mark, but it feels way off. Any advice? I’ve followed the calibration videos on YT so I don’t think it’s that ie screw the chrome ring all the way to the right, align the chrome dot with the arrow to calibrate, then move the dial back to the left until you reach your preferred dot.