I have read all the theory's and solutions submitted by subscribers with interest. But I would like to throw one more possibility into the cooking pot. I purchased a HS kit from Mr. Wiltshire some months ago, on receipt it was found to have sustained damage in transit, resulting in some delamination of the stucture. The kit was duly replaced, but on inspection of the second kit, damage in transit was found again (a small ding to one of the wing skins).
Could this mean that manufacturers and suppliers of this kit need to look at packaging methods. Rough parcel transit could cause unseen delamination problems?.