I also replaced both dipped bulbs with Philips Vision Plus and it took me about half an hour (having big hands make it a little more awkward).
When I'd finished the driver's side beam seemed a bit low and no matter how I seated the bulb, it made no difference.
I took it into the dealer when I next got it serviced and they said that I had managed to dislodge the cable that controls the headlamp levelling system so the beam was set for a full load in the boot - I don't remember seeing the cable in the first place - Oh well, all fixed and the new bulbs do seem a bit brighter
Kristian (156 2.4JTD 140BHP)
On my 2nd Amazon Green