Hello New to site I need help.I just purchased a used 2000 LS 170 from a auction which has 1050.00 hours on it. When I was changing the fluids I noticed that when I had the bucket a few feet off the ground engine off the hydraulic bled off slowly.So in about two hours the bucket was on the ground.Where do I start I cant see any fluid leaks. Thanks in advance for your guys help.