I have a Citroen Picasso 04 2.0HD just coming up to 100000 miles. The nearside flasher failed recently and I replaced it but not before I managed to inadvertently remove the motorized adjuster. Stupid I know but I did it and I am having great difficulty getting it back. The adjuster end has a knob which engages with a plastic grooved part attached to the interior surface of the headlamp reflector. Is there a trick to doing this? Or should I give up and take it to a pro? All suggestions gratefully received. DMcC