Just a quick update, I bled the system at Xmas and it improved things, but still felt "off". Got a bottle of ATE Type 200 (thanks ID-Workz!) and flushed 900ml through the system after extracting as must as I could with a syringe from the MS. And it's pretty much back to normal! There's a slight bit of travel before the brakes engage but I guess that's pads running low? Marc can I just run through what you've said to make sure I've understood it correctly? I've replaced all the fluid now so that's cool. To get the last bit of air out if there is any: -Pump pedal until it's hard, leave it overnight -In the morning, just bleed a little from each caliper in case there's air left?