i know in the back of my head this is not to code but i thought i would ask just in case. i have a 1/2" pancake box attached to the outside of the house. i built these little blocks so that the light fixture has a nice extended look when the shingles go up around it. the pancake box needs to be 1/8" min from the front face and it cannot be this far back correct? can i add material between the house and pancake box (and not the surround) to bring it closer to the front face?