I also have a Janome I use for FMQ. I found that I had to sometimes play with the tension depending on the fabric sandwich. But the real breakthrough for me was making sure I had at least a size 14 needle in and I do not thread through the very last snap on the sewing machine....you know, the one at the very edge of your sewing machine near the needle....that made all the difference and I didn't see any problem with the quilting stitch.