1970 F engine. Refreshed. I have not yet started her. I get oil on top by spinning the pump through dizzy hole. Setting the valve lash, I turned crank to TDC line. Rotor on dizzy pointing towards #4 plug hole. #1 piston at top of cylinder. I set #1 exhaust valve .35 (.014") and intake to .20 (.008"). #2 intake. #3 exhaust. Got to #4 cylinder to set intake valve and its all the way down on the stroke, compressed (see pic). If I loosen the nut and adjust it all the way to spec, it just doesn't look correct, the threads are exposed much much more than "normal". The exhaust valve on #4 seems loose. What did I do wrong? And, how do I fix it. Thanks in advance....