Just throwing this out there, but wouldn't it be easier to just get a proper sized axle ? Wouldn't that eliminate the need to have to tune your yoyo by centering the axle ? Not trying to take anything away from Bos guide, just curious ?
Logged
'Smile, your hobby is playing with a child's toy' -ReverendYo 'I think on these internet forums (and for kids at contests) the sport has become trading/buying and bragging about cool, rare yoyos than actually playing.' -Wiggum
The axle has to be smaller than the length of the threading in the yoyo+bearing, if not the axle will hit the end of the insides of the yoyo before it tightens up..