Those numbers look way more like running compression than cranking compression. Are you sure the gauge is accurate? Do you have another engine to try a couple holes on? I've seen plenty of cheap gauges read bad(think Craftsman) I've seen plenty of check valves(schrader valve in the end of the hose) cause inaccurate/inconsistent readings.I would be very surprised to see under 100psi on a decent running stockish engine...even cold with the throttle closed. Good luck!!