COORDINATION OF GRADES AND PROJECT BASE POINT. DON'T DO AS I USED TO DO, MOVING THE GRADES TO MATCH MY LEVELS. LOCK THE LEVESL, MOVE THE LEVELS TO THE PROPER ELEVATION WITH RESPECT TO THE ACTUAL GRADE AND THEN CHANGE THE PROJECT BASE POINT AND THE LEVELS WILL REVERT BACK TO THE VALUES ONE IS FAMILIAR WITH. THAT'S MOVING THE LEVELS UP TO MATCH THE GRADE.