I have a question regarding local fiducials so as to achieve proper alignment of the board, during the soldering of a 0.4mm pitch chip. As I have seen the best practice for local fiducials is to place 2 of them, one on the upper right corner of the chip and one down and left. Due to lack of space I can only place one fiducial at the down left corner. Is this going to be helpful or useless? I have also placed 3 global fiducials for general board alignment.