I use basting spray on all my quilts and never have a problem with quilting, FM, wavy or straight line. I use one of the sprays from JoAnn's. It is scentless, holds well and is water soluble. I LOVE it. I watch for it on sale or I use a coupon and hope for the 50% off one of course! I don't recall the name but it is not found in the quilting area but back near the buttons, velcro and needles. It is in a purple and white can with a sewing machine on the front. It is clearly for sewing. There is an identical can that is blue and white but is for crafts. That one gums up the needle.