Europa-List: Spark plug Spanner (wrench)

[Alan Burrows <alan@kestrelinsurance.com>]

Hi All 
I am in the middle of doing my annual and decided to torque the spark
plugs as recommended in the manual. Problem is I cant get hold of an
18mm plug socket to go on my torque wrench (3/8 drive) that will fit
into the small space available in the Rotax cylinder head. Before I
start destroying a socket, has anyone found a source from where I can
order one?
Many Thanks

Alan