thanks again for all the replies,
tried setting the timing at the weekend, marked the 6 degree point to make it easier to see and got it spot on, Rangie then ran like a three legged donkey, struggled to get to 40kph away from the lights, tried again with the same result, never been anything like this bad before.
then I read the plate on the engine, this said that due to the emissions control system the timing should be set to between 1 and 3 degrees, did that and we are well and truly away, has anyone had this?
so if 6 degrees doesn't work try 2, it seems to have done the trick for me!

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