The power lift gate opens fine like it should but it makes load pop at the top of opening and immediately start to automatically close itself. I can push it up manually as it is rising after the key fob, interior lift gate button or the button on the lift gate itself is activated and it will not close automatically but then it will not stay up. I have to use a long stick to hold it open while loading and unloading the back. Help!!!! My wife is complaining of looking like a getto idiot at the grocery store. Our warranty has expired so I thought I might try to fix myself. What holds the gate open? The two struts on the side or the mechanical lifting bar? Thanks for any info.