In my RV4 (just acquired) I can see where to adjust the fuel level for the totalizer bar on the engine page, but I cannot get it to accept the change. If I choose a pre-selected number (32 gallons) nothing happens. If I try to add a quantity, it lets me select a number, but ignores it when I push the knob in again.
Is there a trick to this I'm missing?
Is there a trick to this I'm missing?