Staying tight in the bottom of the overhead press is a critical component for optimizing technique, safety, and force production. In addition, it can be difficult for lifters to find the appropriate position at the bottom of the lift, particularly when the load is pressing against the torso. So try this:
Dead-Stop Overhead Press
The dead-stop overhead press allows you to find your ideal starting position. You're able to rest the load on pins before driving it overhead.
Along with promoting efficient pressing mechanics, the dead-stop overhead press will enhance power output and rate of force development as you're forced to overcome inertia and quickly turn on all available motor units.