i had the same problem with the caliper bolts on my drivers side on my old 89 cav, go out and buy some high quality locktight..it works if you do it properly i guarantee it.. take out the pins and put a bead of it around the threads, tighten them up as best you can (try not to strip the nut since the locktite will make it near impossiblr to get off) put the tires back on and let it sit for about 1/2 hour to ensure it hardes...thus ends your problem, worked great for me