Unfortunately it is something that you really only accept once you have a lot of material stock. When you've got a 100m roll of vac bag, it's not hard to throw away 2 metres and start again. When you've only got 5 or 10 metres, you're counting every cm. And that fear of throwing away 2 metres of precious bag and then spending the time rebagging, only to find your new bag is leaking to...