Mr. You Chen-Hsieh are you ready for more bad news ? I just flew a mission with one of your bloodwings and i must say it is a beautyfull ship exept for one detail : the outer most disruptor on the left side is useless cause it has no firing arc and therefor can not be fired at all. Sorry! 
Thanks! It's a typing error, open defaultcore.txt with your notepad and find the line has
kdx PrimaryHP:1:0_60:2:300_360:3:60_120:4:240_3000:5:120_180:6:180_240
change the arc of HP4 to 240_300, and save file.