Sorry I might not have been clear in my point -
Even if we'd have bought K13's instead of the Viking back in the 1990's the same paperwork situation would predate the MAA and the aircraft would be in the same state now.
And they would be trying to manage this issue:
http://www.lightaircraftassociation....hiness/042.pdf
AFAIK the fleet at Lasham are OK as they were built to order using a different glue.