Chin clears but chest does not reach the bar
Pulling strength is insufficient; build lat and upper back strength first.
Overactive muscles
Upper trapeziusBiceps brachii
Corrective work
Foam RollUpper traps↗StretchLevator scapulae stretch↗Pulling strength is insufficient; build lat and upper back strength first.
A kipping chest-to-bar is a separate skill; a strict one requires much more strength.