For people still struggling with the length issue look carefully at the image posted before by "Valiente" at post # 61. (Sorry I'am not alowed to post images so I can not show the image myself)
At first I will say that I also was confused and could not believe what "Giulietta" was saying about this. Plus I had to agree with what "KeelHaulin" was saying about length of the shroud.
Then I saw this image and everything became clear.
If you look good at the tape measure in the drawing you will see it is attached, at the top of the tape measurer, to the shroud with adhesive tape. What this means is that you are indeed lengthening the whole shroud but only measuring the stretch over 2 meter.
If you keep this in mind the whole explanation makes sense.