qldit

Good Morning VincentBanuelos, yes, inview of the balanced cylinder low pressures it is very likely the valve timing has moved.

Hopefully no love making between valves and pistons will have happened.

You can easily confirm valve timing is proper by removing a tappet cover and ensuring that #1 cylinder inlet and outlet valve tappet rockers are perfectly closed and "rocking" at the point when #1 piston is exactly at top dead centre on the inlet / exhaust stroke.

Lack of inlet air will give a lower compression across the entire cylinders because there will be no inlet air available at the correct time when the piston is on the intake stroke, thus that effect will result.

Best of luck there,

Cheers, qldit.