If it was anyone else, I would have thought it was just that she didn't know. But the shop she worked at is also the one who has a tech there who sold another lady a 99 that was electrically unsafe, and serviced the Bernina I've been fighting with (brushes worn down to nubs, and turns so hard you almost need both hands - She'd taken it in complaining that it ran slow...).
I should have listened to my "Spidey senses".
Like that post in the tensioner too? That's supposed to be straight out!