I am having this problem everytime I have to stop on an incline and switch gears. Im glad to hear it is normal but man it is a real pain in the ass. 2 weeks ago I backed up on top of a 8ft snowbank and got stuck at a severe incline. I could not shift or rock it to get it in gear. Needless to say spent 1.5hrs getting my jeep into position to winch it off of snowbank.