To minimize inconsistency in the assembly process and maximize fit quality, Gordon has built a robotic assembly line. A bracket sensor locates every bracket location before spot welding. In preparation for assembly, the computer IC is calibrated to control the number, size and location of all spot welds to assure that they match the OEM master. This robot also indicates when the spot weld tip should be changed. The adhesive robot is programmed to control the size, location and number of adhesive spots as compared to OEM master, and apply the adhesive accurately. Another precision tool uniformly positions the inner and outer skin to assure proper hemming and consistent fit.