YES! Hydraulics work. Succeeded in getting a charge out of the battery. I put a spare nipple on a piece of hose and screwed it in the pump. Found out that the pump was sucking instead of pumping oil out. So changed the direction of rotation in the transmitter. Had just enough juice to see the mechanism go up. So much for trusting the pre-programmed settings you get with the Commander
So tomorrow have to find out why the other servo isn't functioning. Hopefully just a broken connection.