I'm pretty sure second coil already had the mechanics ripped out of them before going on the duty finder. The original second coil no longer exists and it is impossible to ever do it again. You can only do the version with barely any mechanics left, which is the one titled "second coil of bahamut" currently, or a harder version titled "second coil of bahamut - savage". Pretty sure any more mechanics removed and it couldn't be called a raid anymore. Also the fact that you think that doing more damage means you should pass a raid is quite confusing in itself. Do you think that raids are just dps checks?