I will play around with mine tonight. I dont know if it has any quirks likes only coming on when the car is started rather then when door is open, etc. Additionally, I more have a hotspot on the far right and slowly fades out towards the left. When yours works, it looks pretty uniform.
My longhorn is the same way. I looked at the upper glove box closer and noticed that the spacing between the glove box door and the adjacent trim is not even. Towards the center console, the fit is a lot tighter and covers up most of the light. As you head to the door side, the spacing increases and the lights become uncovered.
I'll try to grab a pic with a ruler.
ETA photos:
So the biggest issue seems to be the difference in height of the wood from left to right when looking at the dash. I think this is mainly attributed to the door being made out of actual wood and the variances that will come with working with a natural product.
How flush the door sits to the surrounding trim above:
Door sits about 1/8" more towards the front of the truck on the right side. But notice there is a lot more black space visible on the right, despite being only 1/8" less flush.
Checking the gap along the bottom:
Door is about 1/16" higher on the left than the right side.
The gap along the top is the culprit:
Notice how there is no gap at the top on the left side (1st photo) but quite a gap exists on the right.
Pulling down on the door a little bit further accentuates the difference:
Given that all of the other measurements are within 1/8" of each other, the only thing I can figure is the door itself is not the same height from left to right.
So the door is taller on the left than the right, and there's a small gap - does it really affect anything though? The problem is that the accent lighting runs along the top of the door and is tucked nearly directly above. With the door being taller on the left side and having a curve built into it, the light on the left side is blocked by the height of the door. As the door tapers to the right, more of the led strip is exposed and the lights are able to shine on the door itself as intended.
The end result looks something like this:
