I have a '98 sportage with a manual transmission that I've fitted the Warn manual hubs to. The 4 WD worked fine up until the other day, when driving down a muddy road, I got stuck. Turned out only the rear wheels would spin. No loud bang, nothing out of the ordinary, just lost the 4 WD. Transfer case shifts normally from 2WD to 4WD High, thru neutal to 4WD Low, but no power to the front wheels. It drives fine in 2WD, and the rear wheels have power in 4WD. Before I go find a used transfer case to throw at it, is there anything else I should be checking for? I assume that if I put the vehicle up on jacks, lock in the hubs and spin the front tires and the front driveshaft spins, the problem is internal to the transfer case.

Thanks.

John