I just spray basted two quilts and used my bernina stitch regulator to free motion quilt them. I used the 505 and it worked good - but after so much manipulation the corners kind of came loose so I now have a habit of checking the corners very well before quilting. However - I was a bit concerned about using it - and I think my next one will be pin basted. I hate the idea of pin holes in my quilt. Is this an unnecessary concern? Or should I thread baste the quilt. It sure was easy to spray baste it. And I don't want to send it to anyone else to do anything to it. Opinions on methods other than spray basting?