Was riding around yesterday late with my son looking for deer. We stoped and he got out and walked up a logging road to check out arye grass field. I sat there with the rtv. When we stopped the front tire was in a small depression about9 inches deep. We were in four wheel drive. When he came backI cranked it up and went to leave.It was in M-4wheel, it would not move dropped it to L-4wheel and it would still just sit there and stall out. Tryed revere same thing just stall out. Took it out of 4 wheel and put it in H and no problem drove right out. It was as if the trans. would bog the engine down and not let it turn any rpm to spin the hyd pump to create the pressure in the lower gears. Everything was fine after we started. Put it back in M-4wheel and drove thru the mud, crossed the creek and up the bank no problem on the way back to the house. My question is was this just a fluke occurance or has anyone else ever experienced a similarsituation.We do have the ITP mudlight tires on it.