I had to open my powermax last night as one of the vacs werent working ended up it was a loose wire,i was having a look about when i noticed my pump is a shurflo 80psi pump when its supposed to be 120psi.At the time when i got this pump about 18months ago i was told there was some sort of preasure switch that has been removed so it will run at 120psi but i didnt think it was only an 80psi pump.So see all these powermax machines with 120psi pumps i take it there only 80psi pumps in them or is it just me who has been bumped.