I have a new Yamata fy335 phaff clone and will run #207 all day in the needle with #138 in the bobbin. I bought it in November and it ran way to fast, after changing the crap servo motor that came with it and installing a heavy duty reducer, it chews through anything I can get under the foot. The 1/2 inch lift and small bobbin was it's only limitations which I regret. The cheap monster got me and now I'm waiting for my new girl, Cobra Class 4 to be delivered this week. I may put the Yamata up for sale if I find true love.