Hi Bruce,
The 2XX grills on the 3XX style stand do lift off and it is annoying. There is a separate handle on the stand for moving it but I am forever grabbing the handle of the Q to move it and it starts to lift off. I also have a Q3200 that is fixed to the stand and am used to moving it so I easily get mixed up. Will take some pics for you if you are interested. Hope this helps.
Richard.