If you click on the little arrow after his name, it'll take you to the thread, but there doesn't seem to be anything else of relevance in there to read.
I suppose I should have spoke up in that thread really, but I thought it might be a known weak spot in the engine.
I asked because... I noticed some things about my engine when doing the plugs the other week.
I suspect it was caused by the breather hoses being broken. They had been split around the ends, and therefore had been fixed in place with zip-ties, done up very tight, but I suspect there was still leakage (of whatever goes through them - air? oily air?) around the split ends.
Anyway, near no.6 spark plug was a noticable amount of gunky dusty shit - y'know oily dirt - in the 'valley' between the cams - where the plugs are.
I spent some time cleaning it out with engine/machine degreaser, a paint brush, vacuum cleaner etc. (while the plugs were still in of course). Then I took the plugs out, and the thread around the plug was quite oily dirty too.
I started thinking "uhh. head gasket problems?" but I carried on and the car runs sweetly anyway, and it of course has new breather hoses and the plugs are torqued up to the correct 13ft/lbs.
Anything to worry about do you think?