Had a 12 year old 1.5 hp Hayward pump ( same motor for filter and polaris) motor gave out and warranty company replaced motor only (with century centurion) since then it seems like my polaris is moving about half the speed and not sucking stuff up as well. It usually has the pool sparking by lunch but now there is still some debris at night when it turns off. I was going to call company that installed on Monday but was hoping someone had good ideas on what to adjust. Is the trouble due to the motor they gave me? (I assume the warranty co would give me a pretty crappy/cheap one.)