Autotrac pre-load in Drive - relearn?

[MichaelPrichard]

I've recently installed a reconditioned 246 transfer case, TCCM and Switch into my Yukon XL with Duramax/Allison (LBZ) conversion. This is admittedly a special case, but I believe the Autotrac portion is completely isolated from the trucks ECM, so any Autotrac related issues will hopefully be the same as any other Autotrac truck. The case shifts smoothly through all it's modes and clearly engages the front axle. Indeed, it seems to be working reasonably well, but I was expecting NOT to feel any binding on dry pavement. In Auto4x4, I can feel the truck bind up and slow down on sharp turns going forward but not in reverse which is very smooth and seems to unload the front driveline appropriately. There's no wheel hop as there would be in 4H, so the clutches in the 246 are slipping, but it just seems to have too much pre-load when in Drive. I'd love for Drive to feel more like Reverse feels; no noticeable binding in turns on dry pavement. As these pieces weren't originally shipped in this vehicle, is there a re-learn procedure that should be done to "teach" the TCCM where  the pre-load should be? I've already replaced the shift motor encoder with no improvement. Fluid is brand new Autotrak II blue stuff. Only difference from normal 246 is 29 spline input gear and 1450 u-joint slip yoke on rear output. Truck is 2003 but Duramax/Allison (ECM) are 2006. Thanks for any insights. 

[swathdiver]

If memory serves, anytime you change an electronic component on the transfer case you have to do a relearn.  I can check my manual after dinner.

[MichaelPrichard]

Thanks for the reply. One detail I omitted; I'm pretty sure the TCCM didn't come with this particular 246 transfer case, but probably from another truck with a different amount of clutch pack wear. This particular case had very little wear in it and I'm wondering if the TCCM is simply applying too much pre-load due to having adjusted to the more worn pack from the case it was originally married to?