Those numbers are not good. It is not so much how high the numbers are, but rather that they are all relatively the same give or take 10psi. So even a tired motor with 120 in all cylinders would be a good running engine. Did you clean up the combustion chambers, piston tops, and use a new head gasket? Properly torqued? Did you remove all the spark plugs while testing? Now the thing is to squirt some oil in each cylinder one at a time and see if the numbers change. Being on a stand, you can rotate the engine so the bank being tested it perpendicular to the ground. That way the oil will not puddle at one side but rather fill all around the rings. Squirt motor oil into the spark plug hole, then test the compression. If the pressure goes up, the rings are bad. If nothing changes, the valves are bad. The oil will temporarily seal the rings but not the valves. Sitting that length of time some rings may have rusted stuck causing the low compression. Did you adjust the valves? That cylinder with 0 says to me a valve is hanging open or there is a broken part causing the no compression. Using the Pontiac jam nuts all you do is torque each rocker nut to 20ft lbs. The lifters are self-adjusting so good oil pressure is a must.