I am starting a thread to advise all owners of any of the LaserMask products that there is a proper top and bottom of the LaserMask head. If you look directly at head there is difference in the thickness. The top is more narrow above the lens. The bottom is the thicker part below lens..When they come from the package they are shipped in, they are set up to be mounted from under something meaning the bracket is on top. If you switched the left and right heads and turned them upside down for mounting they are incorrect.This will cause a decline in performance.....Thanks, Micah
Also LaserMask will be mailing out a memo to current owners addressing this issue in the near future.