Due to the angled orientation of the surface they bolt to, any standard block-type "risers" are also going to move the bars rearward at least as much as they raise them. You can try rotating the bars forward then loosening and adjusting levers so they're level again, but you won't gain much back.
I'm guessing if you're 6'2, your arms are pretty long and you'll find riding in a standing position is a lot more awkward if you move your bars back any at all with block risers.
I'm using the standard EM 1.5" rising blocks but would heartily recommend investing in a pair of Rox adjustable risers so you can better tailor the orientation of the bars to your particular needs and not just get stuck with what you get like with the EM risers. One of these days I'm going to pick up some Rox adjustables.