Not so sure here whether I agree. Zee Bavarian Alfa mechanic advised me today that the distributor shaft should have very little play. I have just replaced a cap and rotor after maybe 10k miles, and wobbling on the rotor (new rotor, new cap) it seems like there is too much play. May also be the bushing or whatnot. I shall go abouts and replace the bushings and whatnot to see if it improves. I have starting problems, at times, very rarely, and at times also a slight stumble, also very rarely, and I have checked or replaced just about anything else.
I keep you posted.