If money is a concern, you can make a pretty great static balancer yourself. I'd go ahead and throw a new damper in there, make a static balancer and see if it tends to favor one part of the wheel after it's spun. Watch a video on YouTube and you'll see how to make one. I balanced my wheels and am very happy with the results. Smooth as can be.
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1978 Honda CB550K
+1
You can get a couple of extra bearings, remove seals, if any, clean out the grease, lightly oil, and suspend the wheel between two sawhorses on them.
Keep spinning and adding weights at the high spot till it no longer stops at any given spot.
I've done mine that way and double checked them on the local shop balancer and they are usually spot on.