Hi, i have a 2000 xj, late last year i had to replace the coil pack bar because it had cracked, on the middle pack, well this past May it happened again, i have replaced it 3 times! it keeps happening in the exact same spot time after time, i dont know what to do everyone i talk to says its the part but i think theres something more going on. these packs arent cheap at 100 a piece. I NEED HELP ASAP