Thor M 2 problems, how to take apart?

Ok guys, I just ordered a thor m2, was great for couple seconds until I turned the beam adjustment and it turned off. Switched batteries nothing. I thought maybe it was button problem so I took a wire and touched the battery and housing and nothing. Messing around some how I managed to turn it on. Turned it off went out side turned on fine, turned it off to turn adjustment and it didnt turn back on. Tried turning the adjustment several times all the way in and back out nothing. How can I unscrew the house of adjustment it just stops in either direction and doesnt turn any more. Also, any suggestions from you awesome laser heads. Thanks in advanced.

Ps. I would hate to have to return this and wait longer.