its round like a little ball at the end of the leveler which snaps into a fitting that is shaped like a C, i couldnt snap mines back in easily b/c it seems the fitting is not as tight so it wont hold the leveler in place anymore. hope that helps
you have to pull it hard, i got one of mine out easy enough but now i cant get it to snap back in. you can use a small flat screwdriver to move the clamp inside the housing enough to remove the leveler
you have to remove the back cover that twists off of the high beam or low beam i cant remember which one and then youll be able twist the HID leveler out
new user is right to feel that way b/c it should not take four hours to change 02 sensors and an air filter plus decarbonize, he should of been charged for 1 hour at the most
it sounds like the the dust cover thats on the steering knuckle, sometimes when taking the tire off you can bend it and then it will rub against the rotor to make that same sound