i bought a used kam ilink green, anyway after i power it up, the pattern looks magnified and blurry, if i tap the outer housing holding the the kam on its side, it will go sharp pinpoint like normal, but if put it flat it will go back to blurry, im thinking perhaps the previous owner tried to clean the laser module inside, ie an earbud in the little hole and maybe it popped something inside, is there inside the little hole a clear piece of optical glass, that might have got poked in.