It worked and they both behaved great.
The medical update is: Yes they both have more growth of the septum so we are increasing their medicine at little bit and they get to wear a halter monitor for the next 24 hours, just to insure they are not having arrthymias. We will get updated from that next week.
So here's the thing: I am a fan of bribing kids to behave when it come to being at the doctor, especially when I get to be involved in the reward.