new set of brake pads down a long winding slope will happen quick with no engine braking.

so where does that leave us with the suction(oops i said it) on the valves during power?
or did i miss that bit.

suction exists john,u mean no such thing as neg pressure(till someone pokes his head in the nearest black hole to find out)
suction happened to me last night......its all taken from your point of reference....