Hello from Croatia!
I finally disassembled my bike to replace the clutch and just wanted to update you all...
The problem was in the slave and input shaft rear seal, clutch housing was filled with gear oil, although I can't say I ever noticed it missing.
And just so you know, this is NOT
an easy job, your bike will look like this:
You have to disassemble everything and get your engine off the frame, although manual says you can do it without removing the engine, you get to the point where two bolts and draining coolant makes the difference in removing or not, so, REMOVE it.
I will now have to order two more seals and now that everything is off, I will probably clean injectors and check alternator and starter.
The same job has to be done if you have problems with alternator or starter and have to remove it.
You don't need any special tools to do this kind of job, but don't get me wrong, this is not an easy do it yourself job, you have to be skilled in mechanics, patient and have lots of space for the parts you have to remove.
Once I get to the assembly point I will make some more pictures and can post them as well...
Best regards, Goran!