[amharic]

Hey its actually pretty easy, you don't need to edit it in qmb. All you need to do is when you open the fmb and load the mission it will bring you into a screen with the diffuculty settings and stuff, also it should have another button which is aircraft customization. Click that and you should the same thing that if you click that in qmb. Its the same screen, on the bottom theres that bomb delay and all you need to do is type in the delay time. Simple as pie. Look before you click fly the mission.

Hope that helps
-Amharic