I have a 1995 Diamondback Sorrento (an oldie, but goodie) and I'm having some shifting problems with it. I've tried adjusting cable tension, and the low-high range on the front and rear derailluer, but it doesn't do anygood. On the FD, I've got gears 2 and 3, but no 1. On the RD, I've got gears 5,6,7. Trying to shift into any other gear is weird, because the shifters act like the gear doesn't exist - when pushing or pulling the levers, there is no resistance or click or anything, just nothing. Any ideas?
Thanks in advance.