Are the doors normally extremely difficult to remove the first time? I got the wiring disconnected, and bolts removed. These puppies just don't want to lift up. I've watched Youtube videos of people just easily lifting them up. I can understand possibly one door being difficult, but all 4 of mine are not cooperating whatsoever. Any tips are greatly appreciated. Tried swinging the door while lifting; the whole Jeep moves. Tried WD40 as well.