My 185 has always had problems with loader and steering when cold. This year is worse than ever. When cold the loader is jerky and the steering is jerky. The colder it is the worse it gets. Changed filter and oil no better. Once the tractor runs awhile and warms up the problem gradually goes away. Warmed up, hydraulics are excellent. I can hear the pump when it gives the loader a little shot, other than that it is completely silent. I have been reading some discussions about priming the pump. I have never had to prime the pump yet, and it works when warm. Any suggestions would be greatly appreciated