dart c pillar seam

Yes,its a factory seam.

I dig it out,stitch weld the seam and refill it.You dont have to weld the seam,i just do for reasurrance,big blocks are hard on a bodies without a cage.I used Evercoat everglass and finish out with a regular filler such as Rage.Metal to Metal also works well and usually holds up better in the other areas such as the outer cowl area where the lead seems are.