Update: When running up the selector board is showing dz fail led. I can see that the 1sl and 2lr leds are both lit when in up leveling causing the issue. I have tried adjusting the emitter sensors on the up side but I’m maxed and it’s better but still doing it. I don’t think the distance apart is the issue since the down side sensors are close together and they aren’t causing issue. Unit has been down for couple years. We recently picked up the unit and trying to trace thru it. We don’t know what previous techs have done. I have an identical unit next to it, so I’ve been comparing the 2 but no luck.