I already called Motion Industries and they say while it's available, there is at least a two week lead time on it, so I'm guessing the manufacturer has none in stock, but still makes em when required. They are supposed to call me back with a price.

One other thing I'm going to try is lowering the pump 6 or 8 inches to get it even with the oil level in the reservoir or even slightly below it. Should prime then if it doesn't have to draw the oil up those 6 or 8 inches.