Steve,

So it's won't be necessary for me to set the zero position either?

I will take some readings and mark them down, post it up here. Unfortunately I don't have a caliper with a depth gauge to do anything accurately. Will try and get one. But as I said I see 1.03K at zero, up to 9.6K to about 3/4 travel then it starts to drop off again.

I'm guessing the inline resistor you're talking about is 1K as initially there is a dead spot of about 2-3mm before the resistance readings start to change. I guess once fuel pressure is applied, the control column in the fuel distriubutor lifts and the air flow sensor plate drops, putting the plate much nearer to the real zero position. I'll test the resistance again at zero when it's back in the car. I remember the air flow meter plate dropping with the ignition switched on. Wondered why that was, now I know!

Thanks again,
Neil