Scroll problem and fix guide - Roccat kone Aimo 2 - no soldering required

I've bought this mouse with a really good price but with no warranty. After week i've noticed weird scroll behavior. During scrolling or zooming scroll sometimes jumped 1 or 3 lines up. Also even i was scrolling smoothly down file list were acting like 3 lines down; 1 up, 2 down and so on.
Put mouse to box with no plans for it.
One day i took it out and decided to give a try to fix it.
All proces has been recorded so i hope it will help anyone with same problems i had.
Note: I've sent some mails to roccat with video of mouse behaviour and after some advices they said " We can't do anything else with that, that's a scroll malfunction".
My Facebook page where i post some videos and photos from laptop/pc service:   / pcarepoznan   (PL)

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