Reminds me of a Jap bike with same issue.
It al came down to incorrect placing of the ertalon chain slider/guide.
Same wear on the sprockets and abnormal tension on the rear wheel hub
The chain guide was pushing the chain to the right, while the alligning was fighting to get back to the left
Take good look at the chain slider, abnormal wear could point you in the right direction.
Brutale 910R 2007