Only thing that I have found that works for me is to cut out a piece of wood (but any other materials would probably work too, even found around the house) and prop up the cable. I use blueTack then to prevent this piece from moving. Since I am not moving around equipment, as I am able to pull my complete rack out, this is the only thing that has worked for me.
For the wall outlet, I have not experienced this problem. But you can also bend out the prongs a little bit to get a tighter fit to help it hold in better.
For the wall outlet, I have not experienced this problem. But you can also bend out the prongs a little bit to get a tighter fit to help it hold in better.