So in examining my gas tank problem I noticed a problem with my rear shackles. They are the super long shackles (6-8 inches), but it seems like the longer shackles are putting too much twist on the mounts. I have ordered new, shorter shackles, I just want to make sure they are safe and secure when I install them. The first pic is driver side, the second passenger side. My questions are, does the shackle mount to the frame rail, and what is the best way to fix the problem?