I just got my new incubator and i'm trying to learn how to use all the settings before i put eggs in. I'm following the instructions to level the shelves but when the shelves stop and lock in position they are not level! They stop at about a 30 degree angle. I tried to call Brinsea but maybe they are gone until Monday? I need to set my eggs this weekend. HELP! Does anyone know if there is a way I can adjust the trays?