Any advice how to remove and replace the white sand screen under the drain cap. I like to learn how things work so decided to change out my own sand once my multiport cracked this winter. I opened the drain cap and flipped it over to unlock the sand screen and let the sand pour out and it snapped instanly. I shop vac'd all the sand out and cleaned the tank and tried to tap it out with a screw driver, cut it out with a knife, and anything else I could think of that wouldnt break the filter can. I assumed this was threaded and not glued or held by pressure. I planned to try a blow dryer to heat it up and keep working on it with a screw driver/hammer. The cap is not pretty much demolished except for the solid white part holding it in place. Thank you in advance for your help. First time posting here.