According to the CIC Guideline,
your IELTS score can be converted into like this.
CLB Level
Listening - 7
Reading - 8
Writing - 6
Speaking - 7
This means you just passed the minimum requirement.
(one 6, two 7s, one 8 )
But some agency is saying, you would better take the test again to get higher score to make sure (to be safe).
To be honest, I have no idea about this oppinion.
I just sent my application with the similar score with you (CLB level: One 6, two 7s, one 8 ), and waiting what will happen.
Does anyone have idea?