Is my topcase assembly affecting my keyboard backlight?

Hi everyone,

Some of the keys of my backlit keyboard look faded in comparison to other keys. For example, my G was brighter than my H or C.

I took off the keys to take a look and found that the illumination light of the G covers the entire space for the key, whereas the illumination lights of the H and C respectively do not over the entire key space. I know my description may not make sense, so I took pictures of the phenomenon (I don't know how to insert them here, though.)

My question is, is this normal. If there's a way to upload the pictures here I'd be more than happy to do it. Otherwise I can email them if need be.

Thanks,

Chris