Thanks Brady, that was a good discussion. The recipies I have seen included the paste method, but I didn't know how much sugar to use. I will try the 2 tablespoons (1 per shot) and see how it goes. I appreciate your help.
On the way back from Colombia, I stopped off in Miami for the night and ended up hanging out with some old Cubanos at a local cigar shop where they had an espresso machine set up and were making cafe cubanos all night long. I ended up getting some instruction in making a "proper" cubano and it's pretty simple.
Essentially, you take the shot of espresso and add two spoonfuls of sugar and stir. Simple. Though it seemed like it helped to have the proper cups. The cups themselves were nothing special, just flat bottomed espresso cups but I ended up buying a set with the Cuban flag on them. Tre cool.