#1 The report isn't by people that "worked" for Maricopa County, it was commissioned and a former Republican AZ Supreme Court Justice was in charge.
#2 The printer failures had to do with the ballots not being readable at the local polling place and having to be transported to the main center where more sensitive readers were used.
And yes, having worked as an Electronics Technical for 20 years and worked for a printer manufacturing company (Cannon) for 3 years. Paper weight makes a difference as it impact heating and toner transfer process. Heavier paper has more mass so the heating properties can be different. Especially in industrial settings with high throughput.
#3 And yes people were changing printer settings that morning, because of the tabulator issue with ballots not being read as the technicians attempted to troubleshoot and correct. Duh.
WW