Looking for Blazer door info

[SONOSADSACK]

I am aware of some of the differences between doors from a Blazer vs. a PU but not sure about the area where the window section meets the main door. As you can see in the first picture from my ’72 PU a nice clean gap where the two pieces intersect but in the next two pictures from my Blazer both doors have what appear to be a weld bead? Factory? Or is this someone’s fix? The Blazer doors do not have the ’72 anti-rattle screw like the PU either even though it is a ‘72. Was the weld possibly a GM temporary anti-rattle fix? How about a picture or two of your “I am 100% positively sure this is what it’s supposed to look like and it’s never been screwed with” Blazer doors? Bouncy?