It seems like my chainring is rubbing my frame. Either that or I'm getting chainsuck. There's two scratches and some clear coat missing from the frame in a spot on the chainstay just behind the teeth of the outermost chainring.
Is this the result of chain suck, or do I need to add a spacer to the drive side of my bottom bracket? According to the specifications on the bottom bracket I don't need to use any spacers with a 73mm shell, which is what I have, but I don't want to damage my frame.
Is this the result of chain suck, or do I need to add a spacer to the drive side of my bottom bracket? According to the specifications on the bottom bracket I don't need to use any spacers with a 73mm shell, which is what I have, but I don't want to damage my frame.

