Kombat Rear Bumper Q

I didnt want to have to do this but I am thinking about it. But my exhaust rubs alot on my stock bumper, even tweaking the exhaust wont help its just how the exhaust fits. Its a HKS Hi Power. Even though the tip isnt as big as say exhausts like the Apex N1, it still bairly fits while still rubbing. Now if anyone has ever used a Kombat bumper on a 5th gen coupe, hows the clearance for an exhaust on them, or am I better off just cutting my stock bumper a little bit?

just trim your oem bumper, thats what i did, can barely notice.