For years, we have been discussing how much trigger finger to use on the Glock. What I don’t recall discussing is how high or low on the trigger to press. Lower on the trigger makes for a lighter feeling trigger pull, however lately I am seeing a significant benefit to getting up high on the trigger, as it keeps your press closer to the centerline of the pistol.
Try this for yourself. Hold the pistol loosely in one hand, and press the trigger down low, then repeat pressing up high. At least for me, a high press results in less disturbance to the pistol.