Make sure your limits on the DR are set, most people who have issues with the top idler wheel wearing is because the limits mean the idler wheel is rubbing the DR the whole time...
That's a decent shout, I can see a bit of rubbing when in the largest sprocket. Will have a fiddle. Cheers!
@Sam started
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Make sure your limits on the DR are set, most people who have issues with the top idler wheel wearing is because the limits mean the idler wheel is rubbing the DR the whole time...