Thanks, Jim. The servo motor was only an additional $99.00 ... of course that includes swapping out the clutch motor ... I'll let you know if it's noisy.
I found the site for CutSewService -- thanks!
The Tacsew has a 1/2 HP, 1725 rpm ... but, come to think of it, that was the clutch motor; I'm not sure about the servo motor.
Hey, Bob -- How did you convert your Juki to an air motor? Sounds cool!