Two Heads are Better than One
The Light Tank T2E1 gained a significant amount of weight on its way to mass production. In its initial state it weighed 6803 kg, but various changes to improve its characteristics raised its mass to 8618 kg. This was more than a ton over the limit established by the Secretary of War in the spring of 1933. However, there was nothing that could be done. The tank reached such a level of reliability that the military had to overlook that requirement.