My transfer case seem to leak oil where it attaches to drive shaft. I recently did u-joints on the drive shaft (rear) and when I pulled the drive shaft out of Tcase, oil (20-30 ml) poured out. So, I went and bought a seal for the T-case. Just want to make sure that I’m on right track. Please let me know. How difficult is to reach the seal? I see three bolts, is that all I need to take off to reach the seal?