I have also experienced a slight problem with the Berkley 50lb scale weighing less than certified scales. Over the past weekend, a buddy (who is a butcher by trade) and I were catching as many carp as we could out of a quarry we intend stocking with Florida strain Bass later in the year (we are from South Africa). The largest carp we landed weighed 8.0/ 8.01lb on the Berkley, but later went 8.8lb on certified scales at the butcher shop!