Did mine thru the AC vent. I did get underneath and pulled out the lower vent tube and was thinking OK maybe if I had two tiny little arms I could get this... Going thru the AC vent was easier, and I have pulled that vent before to replace the light switch.
And I replaced the two tiny set screws with thumb screws that I filed to a point so next time I can just reach in and remove without a tiny screwdriver.
