So, I'm replacing my rear springs on my fj62 and in the midst of removing the old springs. The problem is that I can't get the shackle bolts out on either end of the springs. I have beat on the bolts to no avail and they don't seem to want to move at all. I've made sure that I have all the tension off the spring. I was planning on burning out the old bushings but I thought I did that AFTER I got the shackle bolts out. ??? Do I burn them out first or what? Also, the muffler canister is in the way of the drivers side rear and I can't seem to get a good angle on the bolt unless I remove the muffler, is there a better way?