I have a snapper ZTR1844OKH that has develope a problem with speed and power on the right side. I turned the hydraulic release valves counterclockwise to dis-engage them in order to move the mower from the lawn into the garage after a no start issue. After I finally got it cranked I attempted to cut some grass only to find that the right wheel has no power but the left wheel is fine. Prior to all of this happening the right wheel was the more powerful. Now there is just enough power on the right to keep you from going in a circle. All of the pulling power is on the left. The fluid level is fine and the release valves have been re-engaged. Is there any kind of adjustments that can be made to get more power on the right? I did notice that the right release valve was hard to turn and wouldn't open the full two turns suggested by the manufacturer and it was hard to turn the other way to re-engage.