Ok, well as suggested in the previous post, http://coloradok5.com/forums/showthread.php?t=149083 I put the ring back onto the original carrier...and the wierd pattern was still there, just not as noticable. So, I swapped the ring and pinion for the new Spicer set I had already bought. After a day of fighting with preloading, and shimming, and backlash, and pinion depth... I get this. I dont think the pattern is too bad. There is a bit of backlash though, about 0.017" Maybe to deep on the tooth? What should I do? Does it look OK? For those who dont remember, its a Dana 60 with brand new everything (except set up bearing currently) on an ARB locker and 4.56 gears.