Re: Idler Wheel - Chinese make crappy bolts
Almost without exception the tensioner (idler) bracket must be twisted to get proper chain alignment. View from the rear of the bike looking forward and it's easy to see that your tensioner wheel needs to be twisted a little to make it ride true with the chain path.
Good Lord...how many times have I typed that?
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"