Have some backlash in the rearend, is there an easy way to take up that slack? It's the stock 3.27 rearend, and Ford rebuild about 2 two years ago for the same problem but now I'm out of warranty and it's my problem. Thinking about pulling it out and putting in a IRS, or should I rebuild it with 4.10's, would this help? Is this something I can do myself or should I have a professional do it? I'm a pretty handy guy but never did a rearend. Any advise is helpful. Thanks, Matt.