Can the break booster be put on too tight?

Something was improperly instaled or he did not bleed the brake system out or bench bleed the master cylinder to prime it before installing it. You more than likely have air in the hydraulic lines that needs to be bled out.

SOUNDS LIKE HE LEFT YOUR BRAKE LIGHT SWITCH DISCONNECTED OR BROKE IT. ALSO I BELIVE HE LEFT THE VACCUM SOURCE OFF YOUR BOOSTER WHICH GIVES YOU POWER BRAKES. CK TO SEE IF THERE IS A BIG 3/8 " HOSE THAT IS NOT HOOKED UP TO OUR BOOSTER.