Fader sticking on networked console's

I have noticed an issue that I originally felt was down to a particular console but I have now encountered it on separate hardware.

We have two H4's networked together, when both Hogs are on the same page the motorized faders on the second desk "fight" you as you are doing a very slow fade, this then takes over from the main desk stopping the fade mid way.

It doesn't happen every time, I'd say 1 in 3 times.

Anyone else encounter this?