Hello, I have a X reg Alfa Romeo Ti with 37000 miles on the clock. Just had new plug leads fitted as when the weather was really cold it ran like a slug until it had warmed up. I have noticed and for a few months now even before I had the new plug leads fitted that every so often when I'm accelerating its not as smooth as it should be and feels like it is pulling back (if you know what I mean). Last service was at 30000 miles. Can anybody help please?