I have a JD 7230 Prem. MFD with 4860 hrs. It has a 16 sp. power quad. When I want to shift it to park it seems to shift quite hard to the park position. It doesn't make any difference if reverser is in neutral or not. If I shift it to any of the ranges and back to park it doesn't seem to help. Wondering if it's a calibration problem or something else. Thanks for any input.