Clamp on rotator inverting axis. Applying invert node causes glitch.

Hi there!

I’m attempting to create a scene with a fixed camera with limited mobility. Essentially i’d only like the player camera to rotate across a 90 degree angle. I’ve managed to achieve the functionality I want with the blueprint below but for some reason the mouse motion is now inverted (move right looks left, move left looks right). I’ve tried using the invert rotation node but this causes a strange glitch where the motion is locked between a couple of degrees and causes the screen to flicker. Any suggestions on how i can get the mouse / camera moving in the right directions?