You will need to machine the hole out a very little bit, basically just cleaning it up. Then depending on the hosuings you purchased you will need to space the hid bulb back out of the housing to get a somewhat adequate beam pattern so the issue of it being too long is dealt with by doing so. The led light is probably just loose in its socket, I have had a couple that must have gotten bump during install and just had to re-seat them and they worked fine.