I just replaced my booster pump, a PB4-60. Is there any way to check the actual pressure that is produced? My Polaris does not seem to be moving as quickly as it used to. I removed the Polaris from the end of the hose and noted that the water flow seemed to imitate the same flow as coming out a normal hose attache to a spigot. Do you think the booster pump is performing correctly ? Before I take apart the Polaris 280, I would like to eliminate the pump as the problem.