Epic Hard Bassline

Hi Everybody.

Actually i Really need some of your help trying to work out this problem. I want to make a  bassline like this http://www.youtube.com/watch?v=aEDuzk8xXQQ in minute “1:09” and I can not get close to something similar. For years i have tried with different super SAW Tech bass in sylenth1, played several portamento notes, chopped and rearranged them, but with any luck or good results.

Then i am really at the end point and now i want to ask for your support Please if someone can help me with this I would greatly appreciate.

Also if the Sonic Academy Team see this request please can made a short video to guide us all a little better in one of your next Tech Tips Volumes because this is my last option for obtained a great bassline like this.

Thanks in advance.