I pulled the differential out yesterday, as well as many ring teeth. I've had Strange 3.73s for exactly a year. The pinion is good as can be. Usually I break everything in a rear end. Are companies good about this kind of thing as far as any warrenty?

 

Dunno about a warranty, but I had a problem where my ring gear would mysteriously break off ring teeth (and once, pinion teeth!) and damage nothing else IN THE REAR END. Usually, when this happened, it locked up and blew up the transmission. This would happen every 3-6 months for the next 1.5 years, and I finally take my driveshaft in to check it's balance/straightness, and not only was the shaft bowed, but it was out-of-balance as well. What's strange is, when I drove it with the jacked-up driveshaft, I never noticed any unusual vibration. Just giving you an idea of maybe where to look...