[jcurtis934]

The electric motor is what operates the hydraulic pump. The rails under slides do have a downward pitch. Most hydraulic systems are located in the very front near the battery. The slides may have a hard time when not connected to park power and the battery in good condition. Trust you have keep it equipped with distilled water to the level ring inside each cell? If you used regular water, then the battery will die much shorter timeframe due to minerals in the water. Batteries usually only good for 4 years. There is also a "resetting" thermal breaker on the wall that feeds battery power to the motor. These will kick in and out when the motor pulls too much current. Usually the slides will shudder when it starts to do its resetting thing. Sometimes a slide will just stop and not move again until the breaker resets. The slide starting to move then stopping could be the breaker doing its thing or it could be the system pausing that slide to bring in another that is controlled by the same switch. There is no set rule to which slide will go in or out first.