Sounds like your day was like mine Biff...Another Tuesday in the books , workin on a 2012 Kia Sportage awd ,no awd woorkie so I take the transfer case off stupid thing striped the splines outta the transmission, 2500$ fix silly .....design same idea as the old 4x4 trucks with the sleeve between trans output shaft and transfer case input shaft but not nearly strong enough . Parts people at two different Kia dealerships couldn’t get me the parts or didn’t know what I was talking about , it’s a common problem also.