Monte-----This is something that I keep "wondering about".-----Correct me if I mis-understood what you said (probably a couple of times).-----Didn't you state that you have had a problem with the control housing coming off of your ORX (unexpectedly when you were hunting)?--------Have you always made sure that you align it properly and "snap" it on when you install it on the handle?-----If it isn't aligned right and pushed down properly to engage (you will hear/feel it "snap" on)---if that isn't done--it could come off in that case.-------Patsy & I have had four ORX's & never had problem one with them in that regard---they go on firmly & stay on beautifully as they are designed to.------If you want to take the housing off---just take hold of the handle & firmly push up on the bottom of the control housing with your thumb---it will "pop" right off with adequate thumb pressure.------The older Deus detectors had a magnetic affair to hold the unit on but XP has long since went to this newer style (long before the advent of the ORX).------If you are indeed having a problem as to it not locking on----contact XP & they will take care of it under their 5 year transferable warranty.------------Del