When I stick my ridata 2.4x rated disk in my burner, I can't adjust the speed at which it burns at. It is stuck at 4x. 4x isnt going to work at all and gives me errors. If I take the disk out, I can once again adjust the speeds. I've stuck in other brands of media and I can adjust the speeds w/ those. Whats going on w/ this disk thats not allowing me to burn at the rated speed? Please help. thanks.