Originally Posted by
bikernew
...and the RD hanger 'looked' OK ...
The RD alignment should be checked first. It has to be done at the shop if you do not have the special tool.
They all look "normal" but even brand new hangers need to be aligned.
I had similar problem you are described and no adjustment helped. Then I bought the tool and it has shown that my hanger is bent. Fixed it in a minute, and all my problems gone.