Need help in using the grace sure stitch regulator of quilting

You should check with a Janome dealer if your machine can use a stitch regulator. Machines that take a stitch regulator need the ability to plug into the machine, which is not available on a lot of machines unless they have the stitch regulator function. A stitch regulator helps some people. It still takes a lot of practice moving the fabric smoothly.

On my BSR, it has an "eye" that measures the distance the fabric moves under the presser foot so it can stitch at the specified distance. The faster the fabric moves, the faster it stitches, but the stitches tend to more uniform in length.

FWIW, I read a summary of the Janome 8200 QC Horizon and there was no mention of a stitch regulator.

http://freemotionquilting.blogspot.com/2011/05/piecing-quilting-on-janome-horizon-7700.html

If the machine has the capability for a stitch regulator, then it is most likely possible. However, stitch regulators need to be attached (electronically plugged in) to the machine. If your machine does not have that, then you are limited to manual stitch regulation. (However, that may not be a bad thing. There are still a lot of professional sewists who continue to perform manual stitch regulation (such as free motion quilting) on mechanical machines. Their work is beautiful, but they have had a lot of practice. Even if they were offered a stitch regulator, most probably wouldn't want it anyway. Harriet Hargrave is probably one of them.
Harriet Hargrave Professional advice and the highest quality supplies for... The last time I saw her working on a quilt, it was a whole cloth silk quilt that she was quilting using a mechanical Bernina.)

You can contact a Janome dealer or search online. It should also be listed as an optional accessory in your paperwork.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwj-lejWiKbQAhUH6WMKHYLXBPcQFggjMAA&url=http%3A%2F%2Fjanome.com%2Fsiteassets%2Fsupport%2Fmanuals%2Fretired%2Fcomputer%2Finst-book-mc4800.pdf&usg=AFQjCNGCPQc_wJyl_Ts_4bFZ-7M3hX1ZnA&cad=rja

....

I do not know but here you can find one:
Amazon com Grace Frame Sure Stitch Sewing Quilting Regulator for Long Arm...

a quilting foot or buy one with a round hole in it great

Check the Grace website?

I agree to have the regulator check, & even having the whole machine checked wouldn't hurt.

Use a carpenter's level to level up your frame, and be sure to keep the quilt leveled up to barely above the throat plate on the machine, and level front to back. Check the connections on the regulator sensors. If even one is not making good connection, you'll have skipped or broken stitches.

Sorry for your headache. It is the frame. If it is not level, balanced, you have hell to pay. Also it there is a nick in the grooves of the carriage tracks this will cause a machine problem. You may be able to repair the frame, or level it about the old level the table trick, put something under that part.

Good luck

Try a different needle. Use a quilting or topstitch or even a metallic needle - one that has a larger scarf than normal. The scarf is the groove at the back of the needle where the thread goes while the stitch is being formed. Quilting threads often need more "room" there. I have been told that the Inspira quilting needles are good because they have a thread groove on the front and the back of the needle. Not tried them personally but might be worthwhile for you to consider.

For the looping, you could fiddle with your tensions a little either loosening the bobbin tension or tightening the top, or both. Only ever do this in very small increments. But the good news is that even the "professional" quilters do not have perfect quilt backs - just have a look at them at quilt shows!
Pam M.

Make sure the feed dogs are dropped (or feed dog cover is on - I can't remember which way this machine works). The stitch length on the machine has no function so ignore it. (I set it to zero so the machine doesn't have to work as hard). Hopefully this is all that's wrong. If not, use a shorter setting for the stitch length on the regulator, oil the hook and move slowly and smoothly.
Good luck!