On a good level concrete surface, like a garage floor. Put the bike on your swingarm stand (got one right?) and use a T or level and shim or whatever it takes to get the rear wheel at 90 deg. then turn the front to get the same. If the front won't line up you'll have to loosen your triple tree pinch bolts (bottom tree), take the bike off the stand, bounce the front end and tighten the pinch bolts. Back on the stand, level the rear then the front. Good? O.K., now get a long string or line and run it from the rear wheel, from about 4" off the ground to the front. What I mean here is completely around the rear on both sides of the rear running up to both sides of the front. What your looking for is the string level along each side where it touches on the rear to the front. Now with all the things correct (90deg.,rear line etc), the string at the rear surface along the front tire should be the same distance (about 1/2 inch)  on each side. If not your rear wheel marks (on the adjuster) are off and will need to be corrected. This assures the wheels are aligned which is most important then you can shim the front sprocket if needed. I doubt it though.
Reading this , I see what I mean but....if you have questions just PM me. We can do it by phone.

...hey, I still had a bit of libation in my glass Yea, probably overkill but, it can't hurt.