You are absolutely under counter weighted. If you pull more amps empty car up you do not have enough counter weight. To see how much, you have to either somehow, remove some weight off the car, or add some to the counter weight. When you achieve balance,the amps will be the same in both directions. That will give you some idea how much weight you have to add to the counter weight to have the weights be 40%-50% heavier than the car. These old elevators were not as precisely engineered as you would think. That said,who ever was doing the 5 year cat test was fudging the paper work.