slow moving slides

I have a 05 Minnie 29b with kwikee slides. Changed front slide actuator and motor because screw was bent. Still slow and a little noisy when it gets 3/4 out.
Slide room is centered and all slide pads are ok.
Bedroom slide is much better than sofa slide.
They say to run truck engine when moving slides. I do not notice much difference with engine on or off.