I have noticed I have very small WWSF. Regardless of an extremly low WWSF for 6 max cash game standards I am still small winner(1-2bb/100) on NL10/25, the site I am playing on has a pretty big rake of 7.5% so most of my earnings are through rakeback. The previous site I was playing on had 5% rake and there I was a pretty normal 3-4bb/100 winner on same stakes but also had a very small WWSF of 38.

So as I checked my stats per position I noticed that its my SB/BB WWSF that is dragging the whole average down as you can see in the link bellow and other positions are much higher.

Copy paste the following link in browser please:
https://paste.pics/879b5091944756b467aedc1830a2a7d8

So my questions are is my assumption correct and I only have problems in SB/BB and if it is so what would you suggest from seeing my other stats for me to fix that?

If you notice any other unusal stats please feel free to point it out.