I have dual Mercruiser outdrives and I can't get either one to come down. They were working fine when I winterized the boat last winter, but as of this spring both are stuck in the up position. I do not believe it is an electrical problem because when I hit the buttons, I do get the whirring sound on each outdrive but neither moves. Does anyone know if there is something in common between the 2 outdrives, because I find it hard to believe that 2 separate parts would go bad at the same time to affect each drive. Any help I can get will be greatly appreciated. I already checked the fluid level on each and it is fine. Thanks in advance for the help.