My TL just arrived and I'm waiting for the rep to show me how to set the tension and cut the leader strips and such. I watched the video which recommended King Tut thread on top and it sounded like Superior Threads "Sulfite" on the bottom. Knowing this probably wasn't right, I checked out ST website and found "So Fine" which makes more sense. But that's a polyester thread. So I'm wondering what everyone else uses.... thanks!