If you remove your tank, you can install an eyebolt in the frame at the rear tank threaded hole and hang your bike from a ceiling lift or a motor puller (whatever you got) and position (hang) your bike perfectly plumb (with both tires still lightly planted). Start with a string line along both sides of your rear tire and ascertain that there is an equal measurement (gap) with your string along side your front tire on both sides. This will define that your front tire is in perfectly alignment with the back. Find a way to anchor your front once straight (2 2x4s c clamped to both sides of the fr. tire worked for me), then you can tweak the rest of your adjustments up to your bars. With the frame plumb and the frnt. tire straight, with a carpenters level you can also survey things such as are the rims, forks, etc., plumb as well. You can center your bars with a tape measure from the ends to hard points such as the center of your top rear shock bolts L&R. The point is to do a valid survey and ascertain what's right and what isn't. Sorry, I'm a lot better at doing things like this than effectively explaining the procedures, so if I'm not making sense to you, I understand.
