Has anyone had problems with 6.17 gears or lower? I have always heard that the pinions are weak, but have never heard of anyone breaking one. I am debating putting 7.17's in my rig, but I don't want breakage prone parts. Rig weighs 4000-4500 lbs., 350 SBC, Atlas II, D60, D70HD, 42's, hummer beadlocks. Yes, I searched.:flipoff2: