I think the holes reduce the required structural strength of the speed brake structure/assembly/actuation mechanism. Plugging the holes without a thought to reinforcing the structure to handle the increased air loads may not be a good idea.
Ameet Savant ameetsavant at yahoo com > Sounds like some testing is in order. One of you > belly flap guys could > temporarily cover up the holes and see what > difference it makes, if you > reallly want to know... > > Mark Langford, Huntsville, AL __________________________________ Do you Yahoo!? SBC Yahoo! - Internet access at a great low price. http://promo.yahoo.com/sbc/