When bought 6 mths ago, my RJ70 was with auto hub lock. I changed that to manual lock immediately after. However, the one that had was not a perfect replacement - had to add a 1/2inch spacer (see pics). My headache: the bolts keep on breaking up on me! This pics was taken after the 2nd time all 6 bolts broken. Is ist due to the retrofitting? If not, what else could it be... the drive shaft? Do I need to replace the manual locking hubs (again)?