Are you 100% sure it's rubbing on the swingarm? Many think that's the case, but the usual culprit is one or both of the nut cages inside the fender. Have you removed them?
I have a bike where it is tight to fit a business card between the swing arm, and the CT. It never rubs though. As Nitro said, have you done the nut mod? The CT will touch that, and it REALLY looks like it is the swing arm.
Is there clearance on the swing arm, at rest? Put a business card in there. If it goes, the CT will NEVER touch it! Never! Riding, bouncing, heavily loaded, etc, does NOT change that clearance. The only way it can touch, is if it is touching, AT REST.
Let us know. Good Luck.