We have a new home with a domestic well. The cut pressure is 45psi and the cutoff pressure is about 63psi. The lines from the maniblock are 3/8" pex and the main line to the maniblock is 3/4". Our problem is that there is low water volume to all faucets and fixtures. My outside hose bibs do not have sufficient flow to even operate a sprinkler. From what I have read the pressure is correct. I measured the static pressure at one of the hose bibs and it was about 58. Is the 3/8" pex too small to provide sufficient flow?