Today going up a hillside in2 wd lowI became stuck in a soft spot of loose soil..I pushed diff. lock both back wheels would spin.I put in 4 wheel drive both back wheels would spin but the front wheels didn't seem to do anything.It did not break loose or seem to help.I was able to backdown the hill but didn't get the help I thoughtI would when I put it in 4 wheel dr.After I was on level ground it feels like the 4 wheel drive is engaging. Any one have any suggestions or advice on this one?