I recently bought some Ultegra components on eBay and had a question about installing. I installed the cassette and cranks ok and am working on the rear derailleur right now. I wasn't sure how taught to get the cable when screwing it down so I don't know if I have that right. But the problem right now is that I messed with the H & L screws to get the shifting right, but I'm missing a gear. I can't get the derailleur to shift up to the 12t which is the last cog on the cassette. Any ideas?