I just replaced my motor Century Centurion B2854. When we bought the house I never knew that pool motors were not supposed to be so loud so we went with it until it died last week. I ordered the motor and replaced the shaft seal, put everything together and turned on the pump and was amazed at how much quieter it was. Looking at the pressure gauge though I noticed the pressure is now at a 7-8 instead of a 12-14, which is where the old motor was. Is this drop in pressure normal or should I start investigating for clogs? I have a sand filter as the medium if that makes any difference. Thank you for any advice you can give.