Well, I have just played two missions in my 'renewed' British Career. This time, I changed to Airco DH4 to score that medal for sinking ships, and... the first bombing mission I played with Aiming Help, the Second one I tried without it, just to see if my observations were right.
I have mentioned in one of my earlier posts that I had difficulty adjusting DH4's bombing sight. After playing those two REAL bombing missions, I figured out what it was. It appears that, if the Mission Description says Wind is 'East, 3 meters per second', then at altitude of 1500 metres (which I think is standard for DH4) You have to set Wind Speed to 4,5 metres per second. That's how it looked like in the first mission, with Aiming Help. Then on second mission, without Aiming Help, when they said Wind Speed was "East, 1 metre per second", I set it out to 2,5 metres per second. And guess what? Both of my bombs hit their mark. Exactly where I wanted them to go.
So, in order to score hits with DH4 bombing runs, You have to add 1,5 metre per second to Wind Speed if it's East (coming up front of Your plane).
Is that how it is supposed to be like? Because if yes, then everytime You attempt to set that Bombing Sight exactly to the numbers provided in the Mission Description, You will never hit anything.