Dynamic balancing is important to durability and smoothness. Marvin has a unique relationship with Revco Automotive Balancing. He models his balancing program off the lightest piston and Revco takes it from there. Marvin likes to get it within one-tenth of a gram, which is hard to achieve, but Marvin is coyote stubborn. He wants pinpoint accuracy and gets it because he understands how destructive vibration can be.