Scale Freak

I am trying to set up down elevator with the application of flap.
I am using the LS slider for flap control and using the 'FLAP CON' selection to
mix elevator with flap.
Tha problem I am encountering is that the elevator only moves when the LS slider is
in the full up position. I would like the full up position to
represent flap up and as I move the slider down that would lower the flaps.
I cannot seem to get elevator movement when the LS slider controll is fully down.
So what I get after adjustment is flaps up, elevator down, and as I move the slider down to
lower the flaps, the elevator moves up to neutral.

Is there a way to have the elevator move as I move the LS slider down?

Thanks,

Dan