tip for a newbie?

Wow, this thread is a week old.  Sorry.  Tell us what you did and how it turned out? 

Top blade and flat iron can be pretty lean to nicely marbled.  I typically marinate and grill flat iron steaks cut from the top blade roast.  It is a flavorful cut.  Either way, whether grilling or smoking, best served at a final IT in the125F -135F range, especially if toward the leaner side.