Thanks Chris, that's reassuring!
We have no intention to sell the tractor but if in the unlikely event it has to go I will let you know.
I was actually hoping I could pick your brains on a few bits and bobs please if that is ok? Notably about charging issues and doing some bits and bobs with the engine.
As for the similarities with your 108 that would be because it is actually a Porsche-Diesel produced tractor and is essentially the same as a Porsche-Diesel P111, see below;
http://www.europe-machinery.com/used/al ... -a111.html
I have also seen these badged up as a 'Porsche-Diesel Junior 4' see below;
http://www.europe-machinery.com/used/al ... ior-4.html#
The main differences I can see between the long-bonnet A111 and P111/Junior 4 is the front grille and the swage on the A111's bonnet seems slightly more pronounced.
It does seem difficult to find two tractors the same though!
Regards.
Gill.