When I got my Tin Lizzie last month, the dealer told me...Only use King Tut and you will never have tension problems. She doesn't even sell that brand, so I was alittle confused... but she was right. My "Mitzie" TL only likes King Tut, just as my Janome only liked Aurafil or Mettler. The only problem I have had with my TL is the bobbin case being bent from me dropping it, and that problem has been rectified. So, yes, our machines are Thread Diva's and I will only use King Tut as advised by the dealer.