I got it together and it's pumping well enough considering it needs to fill up to 3000psi, but it makes a slight squeaking noise on the down stroke, is this normal, a flaw from the factory or does it just need to be oil which brings me onto the next topic. It says it needs to be oiled every 800 pumps, is that about right for a cheap made pump or is that something leftover from the days of leather seals? And the last of my problems is the gauge doesn't work so I have to rely solely on my airguns pressure gauge, what would I look for to get a new one?