Richard:
You will still need the convex right side mirror, to see what is below your main right side mirror, even after proper adjustment, but you should eliminate as much of the blind spots as possible by proper adjustment. There are several U-tube videos, one even done with a DP, showing adjustment to best eliminate those blind spots. For Example: http://www.wikihow.com/Set-Rear%E2%80%90View-Mirrors-to-Eliminate-Blind-Spots
After adjusting all my vehicles in this way, I find that I am more relaxed while driving, as I always know when there is another vehicle trying get close.