Tried and proven mirror adjustment strategy
The instructions given on the website are consistent with the design intent of the mirror system (inside rearview and two outside rearviews). Correctly adjusted, the inside mirror reflects the rear portion of the side of a passing vehicle as the image of the front of the vehicle appears in the side mirror. Sort of like a relay where the inside mirror hands off to a side mirror, with some overlap where the vehicle is visible simultaneously in both mirrors. The passenger outside mirror provides more overlap than the driver side. No "blind spot" when both outside mirrors are properly set. I've been driving for 40 years also, but discovered this mirror adjustment strategy only 5 or 6 years ago. The strategy invites one to trust the view in the mirrors -- very little head turning required to look front and at either side mirror before changing lanes.