I spent a couple of hours replacing the pump drive belt (I ordered it from e-bay at about 1/3 off the dealer price). The manual says replace the belt and doesn't tell you that you have to disassemble the tension arm and the electric
PTO clutch. It took 90 minutes and my impact wrench. Those guys assembling these things must have big impact wrenches that they like to use.
The new belt didn't help. BUT the good news is right on the end of the wheel motor was a Hydro-Gear label! Don't know how I missed it when I had the motor out. Surplus Center has them for $189 + shipping. A whole lot better thant he $540 quoted by the dealer!
I have one on the way. Thanks for all the help! Between tomnky and Iplayfarmer, I might get this going! I'll stay in touch.