Try swapping the nearside bulb with the offside bulb. If the fault moves with the bulb, then the bulb itself is at fault. Occasionally, halogen bulbs give a distorted beam pattern, and no amount of adjustment will fix it. Also, make 100% certain the bulb hasn't been inserted upside down. There is a locating tab on the bulb, so make sure it is sitting in the cut out in the bulb holder correctly.