It was sitting before I bought it but its all serviced and running now. I have done 4,000 miles in it - apart from some hesitation at town speeds its been running fine.
It has a new actuator and but very slow revving when I got it but its had 2 oil changes now and done some miles its better.
Its still low on power but now with a knocking noise too

Not sure what everyone means by the bottom end or the top - it sounds like its almost directly banging off the rocker cover.