We like to try to keep as many factory spot welds intact by trimming between them and or folding pinch seams with spot-welds over. The best way we found to do this is trim below the spot welds and then make relief cuts up to the base of the pinch seam. Then use pliers (we love these wide jawed locking pliers) to bend the pinch seam over. Once you’ve got the bend started, you can use a hammer to fold the pinch seam flat. Retaining as many factory spot welds or rewelding panels is especially critical for Unitbody Jeeps such as XJs, MJs, ZJs, WJs, KJs, and WKs.