Hi bigdog, welcome to the site. There is a lot of information on No4 and No5 bedding in plenty of threads. It sounds like you have an issue there. It might be helpful if you peruse some of these threads and then come back and ask more if you don't find an answer in them
Here are the search results for No4 bedding which are relevant: Military Surplus Collectors Forums

And this is a link to one very relevant article that would be good for you to read: http://photos.imageevent.com/badgerd...0correctly.pdf

Have a look around here, there's plenty more: Index of Peter Laidler's on-line series of articles.......