[wejones]

Re the motor pointing up or down, while it is possible that some dishes might bump into the pole on turning when using a downward pointing dish, usually this isn't the case. Usually it's a situation where the dish is designed to sit on top of a pole, and has some kind of a flange that stops it from falling down the pole, and this keeps the mount from mounting on a pole facing down. Often these flanges can just be removed, or worse case cut off with a hack saw or file or something. As mentioned above, perhaps you can take a picture of the dish mount. Usually there is some way to allow you to mount it on a downward facing shaft. I think in the long run, if you can make it fit, you'll be better off with the shaft facing down, as I think it keeps the weather out better.