Glad you changed needles - I think that was your whole problem.

I would use a quilting or topstitch needle, not an embroidery, your needle probably too small and or you might be going to fast, there are a lot of variables in machine quilting, most likely its needle. are you ussing a thick thread I would go 90 size for quilting unless you are using a 30wt thread than I would go 100

This was going to be my suggestion. I'm new to FMQ too but having a good time and for me its so easy. Partly because my machine does all of the thinking for me, thread positioning, tension, it'll even tell me what needle to use. I like the 90 sharp, it goes thru the fabric easier, I also use it for embroidery. I use cotton thread if it's a quilt and I want it to last. Polyester thread is strong but over time it'll cut into the fabric and won't hold up. If I'm doing a wall hanging or purse, etc then I use what ever looks the best. The good thing about the Inspira needle is that inside the bottom of the eye, it is flat so the thread just glides over it, most needles have an oval shape inside of the needle eye. Good luck with it all.

Poly thread does not cut into fabric. Gotta love those old wives tales that refuse to die.