As most have said you should not worry about the dents, they should not pose any structural/touring concerns. I wouldn't even think about using the blocks..T-Mar is right, they won't remove all of the dents and will likely cause one to "notice" the dents more than if you simply left them alone.
Clean, adjust and grease it...then enjoy a bike with "patina" and with no worries about a few scrapes and dings.
Bes, Ben