I just had a chance to talk to few long serving local SQ B744 captain at slip station. They acknowledged that there is something wrong with the B744 rostering system for quite sometime.. One local captain clock 30 hrs last month while another 88 hrs. (one extreme to another). SQ has yet to fix this despite many complaints. I guess not only DEC suffer 'unfair' treatment on rostering, but local captains as well.