I have Mopeka Procheck Universal sensors installed on all my RV tanks. I have a need to calibrate the fresh water tank sensor to accommodate for the bottom of the fresh water tank not being flat. The bottom of the tank is sloped and curved, as it should be, for drainage. When I have filled it 25% the sensor reads 44% full. This should not be hard to accommodate with an option to add real data to the fill curve. Are you working on that? Fill curves? I doubt any RV tank is fully square, but it is especially important for fresh water where the amount remaining is what is really important. It makes no difference for gray water, where "full" is what matters. PLEASE add functionality to address this. I'm using the Cerbo GX.