You aren't supposed to have wrinkles on the back???? Who knew!
Your framing tension is the key. I do love the spray adhesive, I've used it also for hand and machine quilting. But the "tightest' quilts I've ever made by hand or machine were hand basted and or pinned very tightly and quilted with a frame.
The other key is to not be in a hurry and check your quilting frequently. Machine quilting has to be done with an even feed foot. (sorry, I meant walking foot) For me anyway, I just can't keep the layers together any other way!