How to place SOLO white wheel properly?

I have disassembled my machine as I've noticed some flies coming out of it sad.gif
After assembling everything back together the machine won't get in a steady state.
The wheel is turning to the right, gets stopped, and turns back to the left.
At this point all the beans leds are blinking.
I've tried setting the white wheel in every possible way and position. It feels like no matter how much it turns to one side, it's just not enough

Here is the wheel I'm referring to: Wheel image
Here is how I set it (this is probably the right direction as the other part fits only in this way): How it's set

However, I wasn't able to find a position in which the machine will start, starting from the right most and turning it just a bit every time, nothing sticks.

sorry for the double topic, please delete this one