My defult burner speed is "MAX" and I can not change it when using a surtain programe to burn movies. My burner is a 16X speed but if I want to slow down the burn to say 2.4 or 4X ,Can I just buy the 2.4 or 4 X disk? I know that the highist disk speed is 8x now. I just figure the slower the burn the better all around disk I will be getting. Thanks for the help.