All, thanks for your quick responses. Here are some more details.

I am not sure how to determine wether it is the engine or the drivetrain. It does stop at all 3 speeds of the hydra-power (over,under, direct) and in every gear other than 1st. The 3-point issue came along later in the game. Could the type or viscocity of hydraulic fluid be a culprit? I am in Ohio, so I get a good mix of weather. Thanks again for all your input.