i orderd a new bolt head from savage. when it arrived, i got all the pieces parts swapped from one to another. when i went to put her in, i noticed that there is a notch on the old bolt head that alines the bolt head with the bolt body. the new piece does not have this notch? what should i do? should i notch the new bolt head...or should i remove the knoby like piece inside the bolt body? i personaly think that the first is better, but think that the second would be easier. but, want to know if both would work, or if only one would work. ,with the second, i think that the knob on the inside is for keeping the bolt head from spinning to far? just a guess though.) thanks for the advice