I have an Epilog 24 TT which I use a lot for rotary work. It works well. Today a was trying out engraving photos on to acrylic. I noticed very quickly that the image was not being engraved on the left hand side of the table. It faded out to nothing. I have checked that the table is level. It hardly engraves at all using the same power settings on the front left of the machine. Any suggestions? I guess its likley to be mirror alignment. Is it possible to check the alignment without using the epilog gadget that plugs into the front of the laser?