This is how to adjust your real derailleur. Step 1: adjust the “h” limit screw and put the bike in the smallest chainring. Step 2: make there is no tension cable when adjusting the h limit screw. Step 3: shift into the smallest chainring and put it in the biggest cog. Step 4: make sure there is no tension on the cabel and adjust L limit screw. Step 5: with the chain in the smallest chain and smallest cog tightes the pinch bolt. Step 6: shift up one grae at a time, if the chain does not want to move tighten the barrel adjuster to increase the tension on the cable. Step 7: once at the top of the cogset, start going down the cogs. Step 8: cut the end of the cable and cap it. Step 9: if possible test ride the bike and go through whole grae rang.