I'm glad that you mentioned the Genie...I have worked with this machine in the past....there isn't a lot of room under the pressure foot on this machine.....Is it possible that you forgot to put the pressure foot down, due to the fact that it was snug under the foot???
If the pressure foot isn't down, the tension is not engaged and creates lots of birds nest....Can you tell that I have done this :oops: :oops: