Hi all, first time post here. I can't seem to find this answer anywhere, but maybe I'm overthinking it. I have a 1/2 hp deep well jet pump (FE Myers HJ50D). Unfortunately, I don't know how deep the well is. The most pressure I can get is about 39psi and my pump can only supply about 4.5 gpm. I'd like to have more pressure so I was thinking of replacing it with a 1hp pump. I'm sure I could do the replacement myself, however, I don't think I want to brave pulling out the venturi pipes. If I only change the well pump, would I still get more pressure (albeit less than ideal) or is it absolutely required to change the pipes and venturi?