I just got an Exciter 440 fan and I did a compression test... what I found really shocked me. The story was that it locked up when the previous owner was riding it. However before I got it, that day he got it un-seized. The PTO cylinder is at just a hair over 30psi which doesn't surprise me. The real thing that surprises me is what the MAG cylinder PSI is. The MAG cylinder is at 160-165psi. This is a little high I would say ha ha. So my question is, does anyone know why it is at such high compression on the MAG cylinder? Thank You!