Our CWT 3000 engine balancer is state of the art with an incredible level of sensitivity. Most balance shops “level of acceptance” is within 1/2 gram which is fine for stock type applications, however in our opinion, this is not acceptable for high performance and  racing engines. POWERHEADS “level of acceptance” is 1/10 of a gram which makes a smoother running engine, longer bearing life and will make more horsepower.