Several people on these forums have done similar things to stiffen the camera swivel stand. So you are in excellent company there.
If you turn the motion detection zone off that tells the camera to use the entire viewable area as a detection zone. The detection zone is there to limit or restrict what areas of the cameras view the motion sensor should pay attention to.
To turn off notifications and events set the sliders off in both notifications and in the Events settings. For each camera. You can turn just the notifications off if you still want the camera to capture events.
You can do this for a V2 cam. I have done this to a couple over a year ago the tabs are still in there , one is outside
A Small tab of clear plastic, cut ,from , any blister pack, slide it into the gap between the camera housing and the part that rotates that will tighten it up,