Thank you Pete, there is a ferule on the cable and have adjusted it as per different manuals and does make a bit of difference. The problem is that it hangs on to 2nd gear until you are doing about 45 to 50mph unless you take your foot off the throttle for a few seconds then it goes into top. Without the cable connected it will go into top at 30mph. Very odd as everything feels smoother. I just cant find if leaving it off will damage the box, so i guess i will have to leave it connected.
Thank you again, Alf.