As I thought. Thanks. By the way, it wasn't a friend of mine, it was a customer.
The only reason I thought I might post this is that I have about 20k on my Autolite double platinum plugs (APPwhatevers, I don't feel like going to the shed to get #s right now), and I am noticing very slight rough idle. The only time I notice this is when I am cruising in first at no throttle, as in traffic. I also replaced the wires at the same time as the plugs, with some Motorcraft (not Ford Racing) 8mm wires.
