On my car there wasn't any visible welting between the running board and the kick panel. I have only owned the car for 17 out of the 94 years this car has been around. The reason I say visible welting is that in some areas, where metal meets metal, there was visible signs of a thin fibrous material used in the joining. But not visible after the joining.
This is my 2 cents so I hope others will share their experiences.
This is my 2 cents so I hope others will share their experiences.