I had to make this sandwich twice... very flippin' annoying! I stuck the backing to the floor, carefully laid the batting over, placed the top 'perfectly' over that and pinned it all, only to find that the tape had let go of it's grip during the process... I had to un-pin, find a different tape and start again from scratch... still, tis done now and half quilted.
The Aurifil thread is very easy to work with, as is my Aurora... all helped along with my free Galp gloves! ha ha ha.