Hi, I was going up my tailgate on my lazer hp and i have to go up at an angle when the pavement is uneven to keep from scraping my rear end, and i had my front wheels on the ramp and then i turned slightly and the tailgate slid sideways out of the hinges and fell completely off; with me half on it. This scared the sh** out of me because i thought my hinges had just broken off. Also the tailgate slides everytime i put it down so i have to work it back to raise it up. This all started when i put a little grease in the hinges becuase they squeked like all get out. ANY ideas on how to keep this thing from sliding. Thanks!!