Zero trigger reduces fps to almost nothing

Hey guys, so i finally got my action army zero trigger but i am having problems with it. I am using a 170 spring, but when i shoot, the air barely comes out of the cylinder. I shaved off some of the sides of the spring guide stopper and piston sear, but it didnt help that much. Should i file it unil it is the siZe of the stock sear and spring guide stopper?
Thanks