I notices the rear rim would rub against the rear right brake pad when I'm hammering the bike out of the saddle(left down stroke). Usually, it occurs on a steep uphill. I had to open up the caliper to avoid the contact. But I like closer brakes. So what to do? My rear wheel is an Easton Orion 2 with a 28 hole rim. It's pretty much brand new, round and true. Two cross on drive side and straight pull on non-drive side. I have another older set of the same wheels on my other bike, they don't have the rubbing problems. Help?