Pull the rotor and put few drops of engine oil in the felt pad in the center of the shaft to lube the centrifugal advance mechanism.  Not much else you can do besides overhaul them including replacement of bushings.  Glenn Ring is your VW dizzy rebuild guy.

Sent from my iPhone

On Jul 13, 2013, at 14:07, Paul Rogers <wognacious@GMAIL.COM> wrote:

> Does anyone occasionally take their dizzy out and maintenance it? Clean it, lube it etc. or is it a "if it ain't broke don't fix it" type part? I'm in the process or putting together a spare one to add to my parts collection in case I need it, or somebody I happen upon that might need some help. While doing this I just started wondering if this is something one should do as a routine maintenance thing
> Happy trails,
> Paul in Tracy
> 
> Sent from my iPad