Well Crap… Here now, with 1:87 set to 1 I get a constant 3401 fault. I thought the ResQpaq was all discrete like a Reynolds and Reynolds but this looks like there’s supposed to be a board on the LON for it. With 7:51 at 0 the car never recovers from between floors, had to have a value. With 1:87 set to 1 while I have the constant fault the car still runs but acts exactly the same as before with any of the combinations of inputs. I think I’m probably looking at a software update. Does anyone have an old KCM hydro with a ResQpaq that can tell me if there’s a LON board and if not, what the parameters are set to?