Killing 400 mobs is not the issue here, but since your changes, that quest rewards you with adena only. I finished that quest couple of times, always got adena, no enchants. That's why i suggested raising spoil rate in FoG, so there would be at least some decent source of EWS. With 2 enchants per hour you'll get nowhere near good equip. This is not supposed to be low rate as far as i know.