It may be that the milky oil under the cap is relatively normal if the bike has only run for a couple of mins. My ZZR600 did this, it just seems to be condensation causing it and a good run burns it off.
However if the entire sightglass shows milky oil, or if you drain the oil and this is milky, then things are not good at all...especially given the amount of money you have already spent on it.
Welcome by the way, I spent some time in Durban when I was a young boy, it was beautiful country from what I can recall, much like parts of Australia. We sailed out of Cape Town on the way here.
Mick
