A large part of the problem is that the pivot screw is too tight. Loosen it and retighten so that the barrel will just barely drop on its own. With safety on and unloaded, muzzle pointed in safe direction, cock the gun and return it ALMOST to battery. The barrel should fall on its own barely or with just a little help. Loosen it 'til it drops. Then tighten a little at a time until it is right. This, most times, also adds to accuracy.