Do you have the thread through all three holes on the thread guide? Sometimes I use 2, sometimes 3. That seems to make a difference. Otherwise, if the top and bottom tension are OK with the normal foot, you might need to move the ruler foot a tad closer to the top. My Janome 1600P was a struggle until I got the adjustable ruler foot. And it only likes polyester thread.
it is a big adjustment going from a standard domestic to a high speed straight stitch only. Each of my machine can be used to do FMQ or ruler work, but each has its own quirks.
Last edited by Krisb; 12-04-2021 at 11:49 PM.