Sooty plugs, running rich - where do I start?

[Topdad]

I still can't get over the mental vision I've got of an elephant trying to *** into my oiltank 

[Peter in Aus]

Man, Crispin A10 your sooty plugs have turned up some real interesting stuff!

[cableguide]

Brilliant thread..haven't had time to read the whole thing...so this maybe a huge bark up a wrong tree.

Incorrect breather cork. These things have been known to cause all sorts of excess oil probs.

[hdawson]

Very entertaining as usual.Well done everyone.
My Matchless monoblock has similar problems and I've been given me some great leads.
Thinking of swapping to Iridium plugs as mentioned elsewhere.
Can these really be cleaned instead of being chucked out after a 10 minute test?
 

[hdawson]

Oops. That's pre-monoblock

[duTch]

 *  Monobloc *;