Are you looking for a stitch regulator to be used on a longarm? (They have the wheeled sensors that ride on the quilt frame track and the stitch is regulated by the speed in which you move the machine) . Or are you looking for a speed control for your machine being used for regular sewing or piecing? I had a Juki on a frame (not Grace) using a Quilters Cruise Control. Had to be used only with a Juki 98Q, worked very well but expensive. This machine is very similar to your Brother so I think one could be purchased for it. But I've taken the Juki off the frame and now want a speed control for FMQ. None of these are computerized machines.