Part number 6 of 12 just completed printing, and the Spaceballs references continue.

The printer slows down at the end here as at less than 10 seconds per layer, my single source of cooling can't keep up.

I have the air pump in the M2 limited to 75% duty cycle as I'm running a 12V pump from 18V.  It's been 15 months running it like that, so I think that worked.