this is why I'm sticking to my Viking. I've had it for a yr and never a moments problem with thread or tension. I love it so much (and Viking) that I'm now trading in my Ruby next week for the top of the line Diamond Deluxe. It was used at the viking convention so it's listed as used but gets new machine warranty plus lots of extras and all of the hoops, etc that I got for my Ruby will fit on it. I'm getting such a discount on it and with my trade-in it was a no-brainer. I hope you find out what's wrong with your machine. I agree, when you spend alot for a machine you expect (and should) to get what you paid for. There is something wrong that's for sure.