Dubjr8

Hi I'm new to this site, bought a 2006 Maxima about 2 months ago. Somebody before me had changed one headlight bulb to a regular halogen bulb & the other was a Xenon bulb. I've been researching what bulb to use & finally decided on a 9006 because it was cheaper. Went to install today & it will not stay in the housing. I have filled the tabs down to fit but still won't go in! Does anyone have pictured instructions with how to make these bulbs fit?? Thanks!