So I need some help I have been fighting with this forklift for months chasing down leaks, replacing broken parts and the like. General maintenance stuff but now I'm stuck I had to replace two hoses as one had come apart from it's coupling and the other had a burst in the line. This is when the problem started. I had just finished up and checked if the forklift was running fine which it was so I put it back into use. The next day I was informed that the hydraulics would just stop working on the mast which made no sense but if you sit there for a moment playing with the joysticks they would slowly return over the course of a minute or two. I have checked the lines and I don't believe there is any air in the lines and the pump seems to work fine but when the lock up happens you can't heard the pump even trying.