Last year my pump started acting up. If you turned it off sometimes it would not turn on. If you turned it on and off a few times it would turn back on. I checked for obstructions and found none. I assume it is on its way out. Is there anything I can do to help it along? I tried taking it apart and was going to try and give it a a shot of wd40 or silicone spray on the brushes but couldn't find any. Is it a lost cause or is there anything I can do?