do you not ride it?
Bit of a silly question but how can i check to tell if my bike has the modded nut or not?
The problem is due to the tolerances on the output shaft. If the width of the shaft threads are less than 17.45mm diameter then the problem will not go away regardless of what nut you use. This is from experience and if you check out the thread http://foc-u.co.uk/index.php/topic,4546.msg45712.html#msg45712 you will see what I did to try and resolve the problem, eventually with Yamaha footing half the cost of the parts required to fix the problem on a bike with over 70000milesThe fix I decided to try is in the downloads section if your interested http://foc-u.co.uk/index.php?action=downloads;sa=view;down=43