I have noticed a bit of a notch in my head stock bearing, 13000 miles and just out of warranty. I can remember seeing an article on the forum of how to replace/regrease these bearings but for the life of me cannot find it now, can anyone help please?

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Leovince SBK Oval cans, Kev's fuel Mod, Snorkel removed, AIS breather pipe blocked, Barkbuster's hand guards, Garmin Zumo 660, Handlebar risers, LED auxillary lights.