I had my new pool put up a few days ago and I have a few questions on PSI. On low it was at 2.5 on Saturday and notice yesterday it was at 2. On high it is about 11. Is this normal? Also when first filled filled with water I noticed the installer did not have pump basket lid on correctly as it was spewing water , is there a trick to this basket lid, I still don't think it is on right. Now after running on high and turning off it spews water slightly.