Just a quick note. You shouldn't use a bar through the con rod to undo anything really or do up. Its very easy to un-true the cranks. Twisting a crank like the NSR's (pressed up) will do it no good at all.

Thats what I've found anyway. But Ive been called names for some of the things I've found so lash into me if you wish!
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If I have to take the carbs off once more...