Tinman, you are a bit misinformed, although the AADSAS does not send out your transcripts, they do verify them and that is enough for most schools.
I applied to 15 schools, and only U Detroit Dental School requires that you re-send the transcripts. The rest of my schools are ok with the verification of your grades.
The letters of rec can be sent to AADSAS any time, even after your application was sent out. The people at AADSAS will forward your letter. But because it takes them so damn long to send anything, I recommend sending the extra letter out yourself, directly to the school. Make sure that they are official and sealed.