I'm having some issues with Rival too. I got the chain rub to go away by tinkering with the FD a bunch and I can get all combinations now except redundant ones. However I do have a problem with cable tension in my big-small (53-12) combination that is really annoying. I cant get the combination to work without the sound of the derailler trying to move. The problem came out of nowhere. So just keep messing with it till u get it.