Hey Brolic, how are the panels fitting? Each corner set allows about 1/8"of adjustability if you need to slightly adjust the width or height. The goal is to have them barely, if at all, touching each other.
Pointer: When removing, break the left/right pair up by hinging the first one out, as if it was hinged on the frame. This keeps the panel you're pulling out from touching the other panel. Once that motion is used, they're super easy, but we caution against just grab-and-pulling.
Regardless, let me know if you need anything.