If you pull (or push) hard enough on them they will pivot in the clamps.
Or you have to take the headlite reflector and bucket out and remove the cover plate over the lock to gain access to the screws that hold the chrome cover in order to remove it so you can access the clamps.
The front bolt for the chrome cover is a pain in the ass to reinstall, it is best just to loosen it, put a towel over the nacelle to avoid scratches and pivot the chrome cover around and over to the nacelle side. This will give you access to the clamp bolts for the bars.