"I didn't spray the top batting, just the bottom side of the batting."
When I baste with 505, I spray the top of the quilt and the backing for the quilt, not the batting and I do it outside hanging on a railing or clothesline and bring it inside to sandwich. I understand you can also spray using Sharon Schambers method but with 505, but you need to spray inside then. Patsy Thompson has a video spray basting on a wall as well that might interest you.