So, I used a tough TPU and tested it in the AMS as AMS TPU and obviously it got jammed. The website has a broken link that points to an invalid URL due to a spelling mistake, so just in case someone else is stupid like me - here’s the guide to disassemble the head.
It’s actually not bad, much quicker and nicer than the X1C. It is a little fiddly the first time as it’s not super obvious how to wiggle stuff to remove it but once you get it, the slowest part is removing the 5 screws.