Differential Contact Pattern At 500 Miles

Heel to toe is not what counts. Depth is what we look at. Motive is not a bad gear, unless something has happened to them recently. I've had decent luck getting them right.

What rear is this? You have shims between the rear pinion bearing race and housing AND the rear bearing and pinion?

Moving the shim pack .002 at a time is ok when fine tuning. To get it close first, try moving it .005 or .006 to see the changes. In order to get an accurate pattern, everything need to be very close to being correct; pinion preload, backlash, etc.. As pinion depth is moved, backlash needs to be moved along with it.

Read this. See if it helps you.

[ame]http://www.ringpinion.com/Content/HowTo/TechnicalInstructions/Yukon_Installation_Kit_Instructions.pdf[/ame]