Originally Posted by Fronkey
Actually that's not what I meant.
I meant you can literally put the tube inside the pillow. You place the tube inside the pillow and close the pillow around the tube which makes it so down can't go anywhere except inside the tube. Then you move it around so it migrates in the tube. Next, you place the down filled tube in the appropriate baffle and ram rod the down into the quilt.
Oh wait, you're talking about a section of tube that's smaller than the pillow. Thought you were saying insert the end of a longer tube and tighten the pillow around the tube and... well.. never mind.