I'm sure they set it up at the proper angle so that the lift generated by the shuttle's wings is slightly less than it's weight. That way it doesn't present much of a burden to the 747 in flight.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250