maz89
+1y
if there all on the edges I'd say maybe somebody did like you said and dropped something on it, because along the edges at the A, B, and C pillars is the strongest areas of the roof. and older trucks didn't offer much bracing for the roof skins, normally just one brace going across at the B pillars......... might just be your luck, lol, do you know what some of these trucks were used for previous to you owning them?