Okayyy... here is another SEO Trick which I always use!
Everyones knows...
Articles with a unique content were giving 100% quality Backlinks..
Are your articles only 60 - 80% unique... so maybe the power will get lost!
Also Google will count backlinks in duplicate content as 0.
So what we can do to?
1. Go to this website: Plagiarism checker - Exactly and 100% Free - Free SEO tools
2. Copy & Paste your Article
3. Enter the Captcha code and click on "Check Unique"
... if this Tool showing you "100% Unique" then your job is done... VERY WELL
Good Luck!