anybody out there had my problem...i have a TN70DA newholland. steering works ok for 4-5 hours then it starts to be harder to turn left. turning right still works ok. when left turn goes all the way to stop you can keep on turning the steering wheel. i dont like to turn that far but i did go maybe three quarters of a turn. right side does the same thing. after setting overnight works fine like it should for a while. thinking the problem is when the oil gets hot it slips by a o-ring or a connection somewhere. thanks