The laser on ours seems to go out of whack quite often. No one around here says they have kicked it or knocked it so I can only assume it goes out all by itself...... 
 
We really don't use the laser all that much. 
 
Being square is important... to a point. You can always mount the panel on an angle...... 
LOL
 
 
Good luck, it's a great tool. 
