It just gets better and effin better;
Before leaving, I checked the fuel and I could see nothing wrong with it, no water, no dirt. About 20 km out I came across a big parking area beside the road, looked like a good place to do a carb overhaul, and I was getting tired of crawling along at 23 kmh, so I pulled in and pulled off the carb. I could see nothing obviously wrong, so I put it together again. No joy, everything still the same. Then I got about 100 meters farther down the road when my rear tire decided to go flat.
Good thing I was carrying a spare tube, so out with the bad and in with the good.
It took me most of the day to get to Calamas. It was definitely the right thing to do, as Calamas is a great place to stay while I sort all this out. I found the perfect hostal as it is called, for working on the KTM
The nearest KTM dealer is 1200 km south, I have sent them an email, and I will keep plugging away.
Meanwhile I am enjoying Calamas and considering my options.