That's the machine I'm using currently on my Grace Pinnacle. I'm very new to frame quilting, but the machine works great! It's the operator that needs training. When the machine is off the frame it's fast, accurate and trouble-free. On the frame with the stitch-regulator, it works well, but the operator needs to learn to slow down with the regulator working.
I have tried it without the regulator and it's just great! However, my stitches need work.....
It's a lot of fun. Enjoy! And remember there is a learning curve to anything new, and frame quilting is not the same as freemotion on a table top.