I ordered the DDM HID Kit (H11 & H16). For some reason the stock bulb when I pulled it out has a lot larger plastic housing that the bulb is attached to. The H11 plastic housing is a lot smaller and doesn't just slide in the hole of the headlight and twist to lock in place. Is this right? Not feeling too confident about how things are going. HELP me please!!! Did they send the wrong bulbs?