2005 W211 (E320): Replacing the light bulbs (D2S) and I cannot get the Xenon Ignitor back on. I get the four tabs engaged ( as I have no problem installing the ignitor without the bulb installed) but I am apparently not getting the two tabs on the bulb fully inserted into the ignitor so that I can turn the ignitor to lock in place. The bulbs are installed correctly. All tabs line up. I am apparently not pushing hard enough (but as hard as I can) on the ignitor to flatten the compression ring to allow the bulb tabs to fully seat in the ignitor base to allow the ignitor to rotate to lock in place. Does anyone have a "trick" to this? I am about ready to pull the headlights.

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Tim

05 E320
86 930
05 Range Rover HSE
95 Range Rover SWB
63 Series IIa
Several boring BMW's for this kids....