Hi. I have a Mk II GT6 that has been off the road for about 10 years, and am looking to get it back there for its 50th birthday (September). My issue at the moment is that the engine is running very rough (misfires and very little power). I'm gradually working my way through potential causes (timing, valve clearances, etc) but my suspicion is that the problem is with the carbs, and one thing I want to check is the needles. The issue is complicated by the fact that the previous owner had some modifications done, the relevant ones here being that the engine is stroked out to 2.5 litres and has a Moss fast road cam. There was also fuel injection fitted, but I had that changed back to carbs (Stromberg 150 CD). My questions are (1) does anyone know what the correct needles would be for this setup, and (2) if the current needles were incorrect, would that alone be sufficient to cause the problems I am experiencing?
Thanks