I have a Babylock Tiara 3 and I have tension problems sometimes. I found that my machine likes the So Fine # 50 polyester thread. The stitches seem to look better with this than some of the other thread I use. This thread is a matte finish and no lint. Superior Threads online has "try me specials" for this thread. You can order this way without spending a lot of money to see if your machine will like it.