Relieve pain, prevent injury, and increase performance. Get customized mobility coaching developed by Dr. Kelly Starrett.
Are you organized at the spine?
The spine is the carriage for the primary engines of the shoulder.& hip.
Disorganization at the trunk results in less shoulder function.
Disorganization at the trunk will impact the pelvis(primary engine#2) which impacts hip function.
It sounds like you are not maintaining the needed torsion force throughout the movement.
Category 1 movement you start in a position of high stability maintain connection(torsion force) through the entire range of the movement , and end in a position of high stability.
Your hands may be in the correct positioning, but it doesn’t sound like you are maintaining proper shoulder positioning throughout the range of the movement.