Stereo & Electronics - rear view mirror rattles off windshield

idk what section to put this in, but i guess this is the place...

I have a system in my car and ever since I installed it, the sub will rattle my mirror loose and eventually it will fall if i don't push it back on. it's gotten so bad lately that i'll have to adjust it every 5 minutes...

anyone else have this problem? and how do you fix it?

i think there's a set screw in the base of it that lets you tighten it down against the metal piece that's adhered to the windshield....it may be under some type of cover, but there should be a way to adjust it. you may want to look into using threadlocker on the set screw, also, but be sure to use the serviceable kind, in case you ever need to break it loose or adjust it for any reason.