Okay....today I have managed to get a few things done...
TB clean
new rocker gaskets
new spark plugs
new fuel filter
new engine oil
new oil filter (which took 1hr 40 min to get old one off which nearly drove me mental and I ended up hammering a screwdriver threw it and then hammering the screwdriver)
I got back in the car once fired up and its got a strange smell. Its a kinda sweaty '3 pair of socks on feet and no wash for 14 days' smell (no its not me

)...
Any ideas if any of the above would have caused it our of curiosity? Seems to come from the blowers by the way...