Upgraded to premier from preferred and no speed increase - have the 3.0 modem surfboard 6180

I have a Surfboard 6180 the 3.0 modem and yet with the upgrade to premier...no speed increase...I do see in a lot of the post that a flag needed to be set in a config file and have been on hold for the last hr. I do see that posting here can help with it. Can anyone help me? ChrisL??