Reply to X1 soft takeover not working

Word.

My VCI usb port is buggered, i got a replacement but i got a gig coming up so just thought i'd map my x1 for 2 deck control in a way that makes sense to me.

Anyway, so i'm trying to use knob 3 to control filter in normal state and gain in shift state.

I've got soft takeover assigned to both but it doesn't work.

As soon as i move the knob it jumps to position, rendering it useless.

Anyone encounter this or know what i'm doing wrong?

Ta very muchly