I have 2006 Outback Limited, when making tight slow turns I can feel the torque bind. If I back out of my driveway with the wheel turned and then shift into drive it hits in hard. When the car is in park and I turn off the ignition it will slightly lurch forward. 
I have measured all the tires and all are the same, although I did drive the car on a low tire for about 40 miles the day I bought it. it was at about 20PSI 
I have checked the voltage to the transfer clutch duty solonoid 1.5 to 1.8 Volts with the solonoid connected, key on, 1st gear, not running. 
I have checked the voltage at the solonoid with the AWD Fuse in, 0 volts at the solonoid. The car still binds with the AWD use IN. I have checked the trans temp sensor, 4000 ohm at 70 degrees F. 
I have checked the throttle position sensor ,  (OK) 
I have changed the fluid twice. one flush and one filter and drop with subaru ATF. 
I think the transfer duty solenoid is under the trans pan on this unit and not in the tailshaft area. Please confirm. 
Not sure where to go from here, anything else I could check? 
  
Any help would be appreciated. 
Thanks 
Chris