As the title says I'm trying to run a KV tellus box for my fertilizer spreader through the isobus loom on a JD 6155R tractor so that the tractor screen is only doing tractor and autosteer and the tellus does the rest. Most of the times I switch it all on it's fine but sometimes the tractor still tries load the spreader to it's own screen which it shouldn't as the implement viewer is turned off so it goes to the other screen has anyone else come across anything like this before?