I recently repaired my 4wd. The passenger side gear that the 4wd collar slides over was damaged due to my wife driving on dry pavement in 4 hi. I replaced and put truck back together. Had only 3 wheel drive. I took it back apart and noticed I installed the collar backwards. Reinstalled the correct way put it all back together and it doesn't work at all now. Cable is good the Actuator is good and the front drive shaft locks. Any ideas? I was thinking maybe because I used some left over 80w140 gear oil its to thick to allow the gears and stuff to move. Any help is appreciated.