Was the stand built from left over lumber from the railng project?

My "theory" on the light "bouncing" is this (from my experience only) right alongside the car the overspray lands on the floor so as your working from the top down, the floors finish becomes flat and you end up with little to no lighting.

I don't want to be a pest about this, I'm just curious if experience the same thing. SO you can tell me flip off if you want to!