Been a long time since I have been here,but I am looking at buying a 2004 f150 4x4.Has new motor and transfer case.trans has a problem.the owner lost over drive.The trans had the broken retainer clip problem.He repaired that and when he went for a test drive,he backed it out of the driveway,then put it in drive,heard a slight click and then no forward gears.Has been parked ever since.Anyone have any ideas?