Not that I know of.
They are each mounted at about 11.25 degrees. To get them to that, I took a piece of 8.5 & 11 paper and folded it in half, then folded a top corner down (45), folded that in half (23.5) and then again (11.25), and marked my block of wood with that.
It seems to be fairly reliable, but that’s more likely due to me using his library ;D
In the 3rd video above, at around 0:24 in, you can see IR light against the wall. From that, granted it’s only a couple seconds in duration and the quality isn’t the best, you can see the width of the beams.
I was planning on playing with the sensors - like putting a washer or two on the outside screw of each to push them slightly inwards.