5
Banners sizes are controlled in the following location.
I am just figuring this out myself, so if I make a mistake, sry.
/modules/system/admin/banners/
Still looking into what all needs to be modified.
My belief is that when you link a .swf banner file it saves the entire OBJ string into the database, this would make it so that any previous banner that you added would need to be deleted, or maybe modified to accept the new changes.
//exec diving mode
//slueth variable -strong
// :)