I was happily fmq with only about 3sq ft to finish when my machine locked up. I've tried everything I know with no luck. I have a brother cs6000i and am getting an E6 error which says the motor is locked up due to thread jam. I've taken the bobbin area apart and can't see anything, and don't really want to mess with taking the case off because of the electronics. Any suggestions? I am so scared that repair will cost more than the machine is worth.