As I am new to this stuff, what is WOT? The plug is always pretty dark and oily but I have only just started riding it hard/fast. I did move the circlip down one notch on the needle, thus lifting the needle up higher (I guess) I will give that a go after this bloody rain stops but I fear this will make it richer and maybe thats my problem as I have installed a larger jet (0.76mm)
So go leaner you reckon? That would be lifting the circlip up to the highest position, thus pushing the needle down lower?

Steve