ok i tested my theory with the filter acting like a polarising filter and i can confirm it is infact true.
when the filter is held infront of a screen and turned to the right the filter gets darker until completely blacked out. now when it sits in the 4k the ribbon section is at a 90 degree from center and this position is actually on by about 10%. the 4k has slight cut outs which allow u to rotate the filters to the left and right. i turned them to the left and gave it a try. i didnt notice the right filter turns a fraction more then the left filter and this resulted in the right screen being brighter then the left. ive cut a small part of the plastic where the filter sits on the left side to allow them to both rotate enough to have them at their clearest. i will try post a video explaining what i mean.