But i just don,t understand how oil is coming from the exhaust surely it should be dry???????[/QUOTE]

I only learnt that last night from James Martin.
If the inlet gasket is damaged this can leak oil as it is in the vapour from the breather. this could leak and then look like the exhaust.

I will be doing my Exhaust gasket in a week or two as I have an annoying raspy tapping to get rid of. Started of with the valve stem caps. You know what it's like solve one problem and it exposes another!!

Cheers Curry,
I took some photos tonight and stuck them up on a new thread as this just seemed to be me, you, James and Buster.
Does it look familiar?
http://www.landyzone.co.uk/lz/f49/what-leaking-213863.html