The seam that joins the lower front part of the rear wing to the top of the sill is a problem area but I can't quite get my head around how this is repaired. I presume the metal of the bottom part of the wing folds inward as does the top of the sill but how is this joint accessed for either drilling out the old welds or re-welding in the new repair panel ? I won't actually be doing it myself but I'm curious to know how the body shop will tackle this....