Ian,not sure what year your bike is,or mods but after my 1st throttle cable adjustment and idle adjustment about 500 miles ago. I am at 2000 miles on odo now.
I have my idle set to approx. 1050-1100 RPM.
When I open up the enrichner (fast idle) mine goes to approx 1700-1750.
And this seems to work just fine for me.I just did it for you right now.
And if you lift up your gas tank,yes,it looks like there is some slack,but I didnt 'F' with it.
Hth's
<!--EDIT|brendanp
Reason for Edit: None given...|1155689850 -->