I recently looked up the same issue, how bad are yours dragging? If you have the front end off the ground and give the wheel a good hard spin by hand, how far does it rotate? I read on some other forums apparently its pretty common to only get 1 rotation out of the wheel that way.
How are you cleaning your calipers? I just recently got my project bike rolling and the calipers were really bad as well. I removed the pads, laid a long thick screwdriver down the center of the caliper and pumped the brake handle until all 6 pistons extended out and hit the screwdriver shaft. That allowed me to spray them with some simple green and use a plastic bristle brush to clean off that hard ring buildup they tend to get.