Thanks Capricorn, this is the answer I was looking for. It's funny however that the standard hook doesn't seem to fit Capricorn's own tires?
Crashnco thanks for your reply, I have flanges on opposite sides exactly how it is shown in the manual and the rear axle is set in the 'b' position (standard) on both sides. I have disassembled the rear end multiple times to try and rectify this, however the belt always seems to want to ride off to the side of the rear pulley, and I can't understand why.
I am worried that if I run the car like this it will strip the belt or pulley..
Here is a link where you can see the mounting of a C801 in pictures.
http://www.yome3000.com/forums-lire.php?id=7968&f=2
It's a very interesting site (in french)