Engine balancing is critical, and here Matt Hensley is using a digital scale to make sure the new rods are within balance tolerances. The lightest of the eight rods will be the baseline, and the others will be massaged carefully to meet that number. All tolerances stated for the products are also double-checked. This is becoming more critical in the speed industry, which is importing quite a bit of hardware these days. Matt and the Hensley crew try to take nothing for granted, summed up in their motto, 'Know, Don't Blow.'