Originally Posted by Bjforrestal

If your rd shifts all the way through the gears both ways without falling off I wouldn't mess with the h and l settings. Take some time and keep tweaking the cable tension. I always use the barrel adjuster by the rd, never mess with the down tube adjuster much, but I think you'll get there. Oh one more thing, make double sure it's a 9 SPD chain. If they messed up on the cable tension, this is another easy screw up, I've done it myself on my own bike, caused me havoc for a week before I figured it out, exact same discrepancy as you are having.