The trigger pin hole is oval for a reason. It's for ease of assembly on the production line. When the action is bolted into the stock, the stock snugs it up to the receiver. If it is not tight against the receiver, the trigger is out of position, causing a lack of travel in the firing pin. When you relieved the stock for the trigger bracket, you cut it too deep, letting it hang down unsupported by the stock. This is most probably contributing to the bolt removal dilemma also. You will need to shim the relief pocket up until the trigger bracket is tight to the receiver and the receiver is resting on the vee blocks.