I have a Bobcat 763 that has the hose going from the small pump to the bottom of the control valve assembly leaking. I cannot see the end under the control valve and taking the side plate off does not look like it will help. Do I need to remove the control valve or is there a way to get to it? If I do take the control valve off what is the normal cost to have it rebuilt? The lift arms drop as you start trying to raise them and I have been told it is a problem in the control valve and considering its age I thought would be a good time to do it.