my k40 laser has a two half circle shaped beams coming directly out of the tube. I've been reading up on alignment procedures (got it successfully done) but am concerned because they say that while aligning, you should have one beam at each mirror that hits the exact same spot no matter where the carriage is in the x-y plane. it's aligned, but there's a problem.

I placed paper in front of the mirrors during alignment, but every mirror, at every location, has two holes in the paper. Is there something wrong with the laser?