Apparently the line on the Niagara can about 'to avoid flaking allow the starch to permeate the fabric before ironing' doesn't mean 'wait for the spray to soak in'. It means 'wait for the spray to soak in and the fabric to become dry to the touch'. The results are about a thousand times better.
This lesson brought to you by /r/quilting.
This lesson brought to you by /r/quilting.