My 96 RMW with 78K miles is a little slow to start. Instead of firing right up, it turns and turns - just a few seconds - but never fails to start. And when driving slow thru the neighborhood, it feels like it's missing a lick. I changed the plugs and wires, no cheap venture, and that is the limit of my capabilities. If I take this to a shop, what am I likely looking at? Any ideas? Guesses?