Yes but after you use the RATO's, they stay selected and you manually have to change over to bombs before calibrating (just like switching the secondary weapon... you know... cannons to rockets, etc). I think it's BACKSPACE. This is not done automatically.. just like if you drop all your bombs, it's not going to automatically switch to cannons....
Believe me this is your problem... took me three sorties in the AR234 before I figured it out.