Yes it is normal to go through a learning phase with a new appliance. There may be new technology used in the the stove that changes the way the burners heat up. You didn't have to do much adjusting with the old stove because you "knew" how to work it the way you wanted. You will adjust and learn the quirks of the new stove in time and then won't have to do much fiddling. Congrats on the new stove. Hope you enjoy it.