How about Win Gard? A lot of dealers seem to be recommending this. Is it good?

Hi bro,

1) If you wish the window film compliant with JPJ.
    a) Front Windscreen = above 70% VLT
    b) The rest window = above 50% VLT

2) If you can accept dark film, Non compliant with JPJ. But clear vision on day and night, and people can look into you.
    a) Front Windscreen = at least 50% VLT
    b) The rest window = Between 30% - 40% VLT.

Window Film below 30% VLT is too dark at night. Hard to see clear on night vision.
Be smart to choose your film.

To solve your current problem, I may suggest you just change the front windscreen tint film to brighter film and see how the result.
If the problem unsolved, then you change your rear windscreen tint film.
If the problem still unsolved, then you can change another 4 doors tint film.