Hello Guys: I just checked out my ride on yesterday to get ready for this spring and summer and when collection water from the gray nozzles in one minute, I collected 40oz. from one nozzle and 42oz. from the other. The instructions state that 45oz should be collected. Should I be concerned about the difference? Could it be a low output by the battery? Is this an indication that the pump is about to go bad soon? Oh! by the way I only have 27 hours on the machine.