Hi David,
That does seem very odd. I would considering going around OVP and contact Villapac directly.
http://www.villapac.co.uk/
There is a UK number on there. I rang them when my installation was due and it seemed to go OK. Unfortunately mu aprtment got flooded over Christmas with the torrential rain and my sofas have been written off before they have accommodated a single backside!!!
Anyway hope this helps.
John.