Be sure your needle is the correct size for the thread you are using. That is the most important thing about free motion quilting. Every machine is different when it comes to what thread sews the best. I use Connecting threads for piecing and quilting and no problem with lint or breakage. I also use silk, rayon, and poly, all sizes. I keep chart listing what size needle does best with what thread. It take a lot of trial and error to find the right combo.