1. Reduce your rpm (- and = keys control engine rpm) to 2300 or less rpm to reduce your airspeed. A bomb run at full power can lead to dropping a little long with the B-24. The error is magnified, the higher above the target you are.
2. It is not necessary to continually check your E6B and adjust to the airspeed and altitude from your first calibration. Just calibrate for about 5-8 seconds after your speed has stabilized and just before your drop. You should try to align to your target from about the radar circle distance (about 12 miles out) from the target. You can align by going to the front gun, then press F3 and steer with your rudders. You can zoom in and align from about 20 miles using that method.
3. The only way to steer from in the F6 bombsight view is to use your stick left and right. That will turn the aircraft slowly using rudders, but you cannot use your rudder input from your pedals, stick or keyboard. You joystick controls the rudders while in the F6 view. The posts above are incorrect.
4. Please check the write up on bombing in the trainers information link in my signature. You'll find more in-depth information.
Yes, the B-24 can indeed drop a little off target if you are at full power.
Good luck and send a PM if you have any questions after trying this technique and reading the trainer write up.