i have a 5088 that the sentry light is coming on sometimes. When I start it up I have to push the clutch all the way to the floor to make it go out and it's fine for the day. Lately the sentry has been coming on more often especially when I take it out of gear. Today it was cold out and when I put it in reverse one the sentry light comes on and doesn't move but if I put it in reverse two it goes fine and it will shift to reverse one then. I tried this with medium 1,2,3 and 4 same symptoms. Can a bad hydraulic pump cause a problem. I say this because late this summer my power steering got a lot harder. While planting wheat with a three point drill when I have it raised up the tractor steers real easy due to the drill taking weight off the front. Any ideas greatly appreciated.