sole sticher Tension adjustment

[Naidni]

My machine has three of these thread carriers.  the inner, grooved roller is fixed, however the outside slotted shell has 2 seperate slots that can be adjusted to affect the thread path. If you study the picture you can see that where the thread exits the slot. If you look carefully at that ring at about 7:00 o'clock you can see the thread entering the other slot. 

Can the orientation of the slots affect the thread tension? In my minds eye if the ring was rotated counterclockwise so that the thread exited at ...say...12 o'clock instead of 3 o'clock it would be harder to pull. Am I on the right track??