After reading a thread a while back about GL-5 fluid in transmissions, I got some GL-4 and figured to change the fluid in the transmission, just in case, and the transfer case while I was at it. All went well until I tried to remove the fill plug on the transfer case. The hole has been buggered up so the tool won't work. I was about to go after it with a hammer and chisel when I had another idea. I can't tell from the service manual whether it will work or not, so I figured I would consult with the experts before trying. If I remove the gearshift and pour the fluid in there, will it go down into the case? Seems it should, but I'd rather be sure before starting. Thanx in advance.