Hi Fred,
Very cool, you have the 1247th CJ-3A!!!
I suspect there may be water in your transmission. Was it parked out in the weather with no top? If so rain water can run down the shifter and get in the transmission. Pull the drain plug to check it.
I'd like to find out more about your very early CJ-3A. Can you measure the distance between the wooden hood blocks and the hood's center seam? Would it be possible to get a photo of your passenger side front fender? I'd like to see the splash apron area as shown in the following photo.
Thanks!!!!
Bob
