I see what you are saying Jada.... but IIRC, KrazyKuda called them and got the opposite info, that their HV pump gets a 72 psi spring, instead of the 55 psi spring. And my HV pump indeed came with the 72 psi spring.
Anyone know what the relief spring pressure is for the MP high pressure spring? I have been assuming it is the 72 psi spring.... but that may be wrong. Maybe there is a 3rd, even higher pressure spring....??