Hydro oil was just changed. New filter. When it's cold the pedal will go about halfway down and whine and flutter and the tractor moves a little. I roll the tractor back and forth with the fel and sometimes the pedal will get hard like it's supposed to and the will tractor will move fine. I discovered this by towing it in the shop the first time I started it and it wouldn't move. Don't know if the rolling it actually helps of if it just works after a while on its own