well its gotta happen..my blazer is in desperate need of a tranny rebuild...sucks ass, no one wants to spend $1000 bucks on a damn tranny! anyways, i recently installed a zexel torsen in my rear end, and we didnt measure backlash or any of that good stuff. how much should i expect to pay a shop to make everything good..its already installed i just need them to tweak it a little... :doh: