Hi everyone.
I had newly opened roll of BL PLA Tough in my AMS and after light use the 2 halves of the spool came apart and the filament unwound on the spool just enough that I couldn’t get the 2 halves back together again.
Ended up hand winding the almost full roll onto some old spools.
Moral of the story - check the 2 halves of a spool are locked together before printing, even if it’s a spool / roll supplied from Bambu. Their spools don’t seem to have the wee locking piece that is in the downloadable spool 3mf. I’ve printed a few off to fit on new rolls.