Been doing some more work on the engine.
Found that they had used some crappy gasket under the rocker cover and put it everywhere (even where it wasn't needed!)
So cleaned that all off and had a look at the cams and lifters.
I also finally removed the coil pack after having to drill out one of the screws (too tight and
It turns out that i have 2 x bosch spark plugs, 1 x TDK spark plug and 1 i have no idea who makes.
So, next step is a new set of plugs me think.