Thank you threedogs, will have a hunt in the UK, interesting thing is after putting it back on the internal tank in order to move it I was surprised how well it ran such that I took it up the road, almost perfect and soo much power, so I am now investigating the pump myself, I might add I am an ex diesel engineer, so am well capable of a complete pump strip and rebuild, but of course I have no calibration equipment now so will only be looking at a simple look for anything that could cause this to happen, on the 2.7 there is a mini filter and a metering orifice, we have found the mini filter is best removed, do not know if the VP44 pump has this or similar but I will find out,