Keyboard my right side doesn't work

I have had a similar problem, mainly the keys diagonally  (p,l,m ,o,k,n) and also trouble with the pointer shooting off screen. I lifted the keyboard and flexed it up in the center slightly and put a plastic strip in the centre(about 1mm thick) to support it . I also left only the two middle retaining screws in but not too tight. So far this appears to have prevented the key problem  but the pointer is still sometimes a problem.Hope this helps but only flex the keyboard slightly up in center.