Assuming the rotor turns clockwise in my 83.5 Westy it would appear only the
latter half of the rotor's tip is doing any work. The copper (or brass?)
metal tip that is as wide as the rotor and hits (or rather passes by) the
contacts in the distributor cap. On my rotor the first half of the tip is
clean like brand new except for a slight dulling. The second half is darkened
and has a little black residue which I would consider normal -- IF -- the
residue covered the whole length of the rotors metal tip.

Is this a sign my timing is retarded--or is this a normal situation?

TIA
Jeff
83.5 Westy
LA,CA