Without wanting to cause too much fuss, I was wondering if someone could give us a short tutorial on live hydraulics, what's good, what's bad, what generally get the job done, etc. We just bought a JD 4020 (has 2 remotes), and the hydraulics seem to leak a little (lift action is slow some, but full for power), but I am unknowledgeable about the "live" aspect. Thanks in advance for your time and consideration! Also, what about hdraulic fluid: is it all generic, or is it like car oil, you shouldn't switch brands? What's a good trade name here? When should you change it out? Other maintenance things we ought to do??