I have a question about the load weigher. When I go into menu 5-1 and it shows L 5 with the car empty does this mean it's 5%? From my understanding of these elevators that when you set up rhe load weigher you turn the pot until it reads 0 then load up the car and make sure it's set at 100 then when the car is empty again it should read 0 (+/-3). Am I right on this? Thanks in advance.