You probably removed a little too much plastic from inside the hole. I just removed maybe 1/32" of plastic and they fit real nice and tight.I just installed two of them and they suck!! Once I clearanced the stock location they wouldn't stay put.. I had to use a zip tie and hot glue to hold them in place. Other thing I don't like about the ones I got is they light up(way to bright) when off and when on the light is off... I tried it every which way and I can get them to work with no light so I'm going to change it now that I've driven with them at night for a couple of days... Everyone that has not bought them stay away.. Anyone got a good replacement?
Andy