Lee In Mashiko, Japan wrote:
Is the pugmill a de-airing type? Could the vacum source be plugged?

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Lee In Mashiko, Japan
http://mashiko.org
http://seisokuro.blogspot.com/

could be the clay is "tired", needs a rest for a couple of months,
possibly some (small amount)live yogurt added will help, needs to get
some algal growth inbetween the clay platelets so's they is slipperyer,
other possibility is that the clay was a bit wet when it went thru the
pug, you'll know if this is the case 'cos it'll look "dog-eared" as it
comes out of the machine....
Hugs
Eddie