[7dee2]

Answers my question and the weld thinking will remain secondary. Jim this might have been part of what you read in your research.

Here's a partial quote from the Frame section on Frame Repair in the 1972 Chevrolet 10-30 Series Truck Service Manual:

Welding
NOTE: Do not weld into corners of frame or along edges of side rail flanges. Welding at these points will tend to weaken the frame and encourage new cracks.

Bolting
Wherever rivets or failed bolts are replaced, bolt hole must be as near the O.D. of the bolt as possible to prevent bolt from working and wearing. Drill out and line ream hole (or holes) to the bolt O.D.