Argh! Printer down
A Raspberry Pi camera just arrived so I can keep an eye on the printer without having to sit in front of it so I went to change the filament to 'printer parts purple' and noticed the hotend was a bit loose (might explain why my ASA print last night was so ugle). Dismantled it to tighten the screws, but its actually the two threaded nutsert things which are loose in the X-carriage
That doesn't appear to available as a spare part either.
Poop.