I just took it apart and did not find anything obvious. It is starting up a little better, about 45 seconds most times. As far as the flow, I shut off the main pump so the only thing on was the 6045 and checked the flow with my hand and visually. I then turned on the 6025 and did the same thing. The 6025 feels stronger then the 6045 but the flow on the 6045 goes a little further, but not what I was expecting. I guess I was expecting about twice the flow, because thats what the specs say, but just got a little more.