Don't bother!
Its so much easier to give it to your LBS
All my friends say theyv'e tried to straighten their wheels
and i look and they are Feckd...probably worse than how they were before.
i agree it is quite hard tryed to true mine the other week took about half a hour / 45 mins and got it about 1mm or 2 mm better (didnt help having a nipple key that was tootaly f**ked) but yeah if you want it doing good take it to a lbs and if you get friendly they may do it for free
( or i did as i am mates with them
)
Its quite simple.
You need to find where the buckle is in the rim. using a pen or whatever.
then count the spokes from one of of the buckle to the other and tighten the spokes on the opposite side of buckle 1/4 of a turn each. Make sure you do it that much as it needs to be done in even increments or you rim will bobble up and down.
You have to keep doing this all the way round, it often takes quite a few goes until it is all true.
But like i said above make sure you do each spoke 1/4 of a turn or you will end up with spokes that have uneven tightness.
cheers
also once you have done that you need to check to make shure its not moved into a oval shape and you do that in the same way just put pen so its over the top of the rim and tighten/loosen the nipples 1/4 of a turn to get it circular then grab pairs of spokes and pull them this makes the spokes untwist wich can make the rim less tentioned and can make it weeker and you dont want them to untwist when riding.
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