I am the same way, just cannot crawl around on the floor! I spray basted my last quilt, working on it now, and I had some sifting too. I think it may be the batting too. I think it's a poly batting. It seemed to work fine when I sprayed the back and layed the batting on that, but when I sprayed the batting to add the top it didn't stick to well. I think thats where I got the shifting. I think I'll be sure to get the cotton batting next time. By the way, I hung my layers on a wall I made from insulation boards and I love it so much more than the floor. I will be watching this posting for tips.