SME V and cartridge spacer

Everything affects the sound in some way.
In what way, you ask?
You tell me.

Most audiophiles don't know what they hear. There is something different, but what? And when someone well known (a reviewer for example) says or writes about that, then it is fact.
.... the sound without spacer is salubrious, exquisite, stunning, glorious and dazzling and the sound with spacer is superlative, smashing, magnificent, superb and impeccable...

I'm just curious, what exactly is this SME V spacer made of. Metal (Magnesium...) or some Duroplast hard plastic and its weight?
Having had a similar issue as you (OP) mentioned, with my Ortofon M20FL Super cartridge, I, at the time managed to make a spacer from Beach hardwood 3mm thick, and it still serves me fine.
The weight is about 0.65 gramm, and the cartridge with only 5 gramm being on the light side, it seems just fine. 

I am trying to imagine how a spacer could have an effect on "faulting" at the edge of an LP.  Can you amplify on that?  I guess maybe you could define "fault".