I am wondering if some one has an answer for my question. I have a t-14 transmission and a dana 18 transfer case. anyway, my service manual says that there are drilled passages between the transfer case and transmission. for the purpose of oil circulation between the cases. "b-37 jeep universal service manual". only thing is the transfer case gets over full and the transmission goes low, the oil must be traveling through the bearing near the transfer case gear. should I put my own holes in the transmission case.