Tonight, we re-installed some of the front sheetmetal. Even though the panels were pre-aligned on the jig, the jig had is different from the Chevelle's frame from a strength standpoint. Even though the jig maintained the exact GM dimensions, the additional strength of the jig did not account for the amount of flex inherent to a 40 year old GM frame. Be sure to allow some time to realign the panels if you built your car on a fixture! Comment at today!