So sorry to hear about the problems you're having with your Juki. I don't have one, but did want to comment on the length of time your dealer takes with repair. Is the 4-6 weeks usual? Do they repair in house or send it out? I could see the lengthy time if they send it out, so I'm wondering if there is a dealer in your area who repairs in house. (My dealer has a 5-10 day repair time repairing in house, and I've had tension issues repaired on the spot.)