You sure it isn't the chain slap coming from the chain slide that goes around the front of the swingarm? Does your chain guide on top have play in it? Put some thin weather stripping underneath it and see if that eliminates it. I went with the T&M Designs chain slider and that solved my issue. They are a much beefier design.
Yea I'm sure. It has a guard there with foam underneath. I ordered one of those yesterday. They have the yellow on closeout for $30. It's apparently the old design (they called after I ordered and explained) in the way it mounts. I am going to try and paint it black. I am sure the black paint won't stay where the chain rides I just hope it sticks to the rest of the plastic.