Just done my first valve check and adjustment on my 07 plate 1098S at 24k miles. It’s had 2 previously but not by me. Lots of patience required and hellishly tedious but not complicated and immensely satisfying. Bought a 4V-7mm shim kit from Mike at EMSDUC along with an engine turning tool, digi micrometer, new belts and JPdiag loaded on my PC to tune them at 110Hz. Shim kit not cheap but well worth having a wide selection. Despite this, I still needed to lap a few in on sand paper to get the right gaps. But the results were worth it. But what a feckin pain in the arse job. You can see why people charge so much for doing it. Hopefully a few pics and a table showing the final clearances and shim sizes used. Rich.