Jayhawk,
your correct the TA is set to manual mode for bombing!
I may have been the trainer you tried to contact,I was afk as no one was in the training arena at the time.
I'm not sure who set the arena last but we've had it requested to be set to manual mode to assist players who have had troubles in some events with the manual bombing.
I'm sorry I wasnt there to change the settings for you,next time leave a note in text buffer if the trainer doesnt respond,they can read it and try to respond as soon as they can.