I felt the same way about my Pro 9 (5") trigger. I installed the Apex flat trigger & Forward Set Sear kit. My trigger is at 4lbs. If I were to use the factory trigger spring its right at 3lbs! But 4 is what I like.
I wouldnt call it a hair trigger & I don't feel its unsafe, but for all practical purposes there is no pre-travel.
The Apex USB was part of the kit, and was definitely more machined than the stock on from the Pro shop. Maybe they did change it. Mine was bought new in April 2013.

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