I recently inherited a YM195D from my grandfather and I believe he did some modifications to the three point hitch control and I would like to return it to its original state. If my understanding is correct, when the control is moved to the up position it should rise until the position rod moves the control back to center. The way it is right now when you move the control lever it stays wherever it is put and if left in any one position too long it starts to make a "hissing" sound. Does anyone have any suggestions?