Managed to pop out stereo this afternoon with a bit of force

Ali... you say that your head unit pops out from the slot under acceleration........
Have you put a cage in for your Head Unit to sit in?
Origionally the cage I have for my Alpine HU wouldnt fit so I filed round the edge of the facia and in each corner slightly just enough to get the cage in and for it to sit in snugly so shouldnt move now at all now...
A lot easier and less ugly than the facia kits ive seen that you can get on EBAY
Cheers for the comments
S