Assembly help Prodigy 4.25

This is my first DS 1911 gun and I’m in the process of installing a new red dirt trigger but as I’m assembling the gun I can’t get the hammer to lock back while installing the grip safety. When the grip safety is removed the hammer will lock back with an audible click and the trigger works but needs about 10 pounds of pressure. Any answers as to where I went wrong and how to fix