Think of it this way....Grace makes the stitch regulators (Sure Stitch) and they make frames...of course they want you to have one of their products. Having just purchased a Grace Stitch Regulator for my Grace SR-2 frame with a Janome machine I can tell you that the instructions are geared toward the Grace frame. However, it seems to me that anyone with common sense can make the regulator fit the carriage trolley for their frame. be sure when ordering the regulator to state Juki 2000 Qi, as this tells them which plug in to send for your machine.