Thanks for the replies.
Tony - agreed, I'd expect to have to tighten the cable if the clutch was wearing excessively. Definitely had to loosen it which is why I'm so confused. It has bike oil in it - nothin' fancy, just bog-standard 10w40 (changed the oil/filters myself before I left the UK). It hasn't used a drop of oil since I left either.
duibhcek - your issue sounds identical to what I experienced, although much more severe, which is a little worrying!
I think the way I'm gonna play it is to give the bike a good thrashing over the weekend and see if any further issues arise. If the clutch holds up OK then I'm gonna risk it, otherwise I'll get it looked at by a dealer (found one!). I've got to come back to Ankara on Monday to collect a visa anyway.
Btw, we just set up our blogging site -
www.roja45.com - already a few blogs/photos from the Balkans on there, and we'll be adding a lot more (and more bike-related) stuff when we get going into the mid-east. There is a blog about the Ten breaking down in Germany though (standard rectifier failure!). Check it out, would love to know what you think.
Will update the thread after the thrash-test and let you know how it turns out.
Cheers again, JD