Using the Kana v2 since a while now...and i have a question.

It sometimes feels a little jittery (extremly low, only noticeable if i pay attention to my mouse arrow...but i dont know if it affects my aim or not) or something like that. I dont know if its just some sort of negative placebo cause i still cant aim as well with it as with my DA.

But whats the best way of finding out if its working properly or not? Are there any programs which can help me there?
Or is the Sensor flawless, as many people seem to say, and im just a noob?

The mouse is using the Avago ADNS-3090 (like most of the Zowie mice, such as the FK)

https://imageshack.com/i/iqLijudVj This is what it looks like in paint, seems flawless to me...but i really dont know.

The Sensor in my DA used to be more in the front (i used it for 7 years or so). The Sensor in the Kana V2 is more in the back...does it make a big diffrence ?

(Since i posted it in the wrong area and got no response, i give it another shot here :))