I stand corrected - I was assuming position controlUMMM... It's assembled properly, although maybe not adjusted properly, that will come to play once it works.
And there is no lever on the other side, this is a canceling feedback, not an active feedback.
It only engages when it reaches max lift of the three point.
View attachment 178284
In any event it does not appear to be assembled correctly - right order but wrong placement.
Dan