Ok, I've read some threads on this and just can't figure it out! And I already broke a spring on another simplex derailleur so I'm scared to mess around with it. Can anyone tell me if I have the tab thingy in the right place? Do I need to twist the spring to get it in the right place? The bolt part is from a sx-410 if that matters. And look at how it would mount on the bike. It just doesn't make sense. Anyone know a place in Philly that might be able to deal with this? Not my LBS.