I am new to this forum and skidsteers in general. I bought a used 743 with about 2200 hrs on it a couple of weeks ago and have a few questions. I plan on using this for some projects around the house. 1) The lift arms and bucket seem strong but I hear some noise and chatter from the drive units, how much noise is normal? 2) I plan on changing all the fluids, is this a good idea? 3) Is ebay a good place to buy the service manual? Thanks for all the help.