John, don't you think that an aircraft which was in one configuration 30 years ago may be in a different on now? My point was that just because 30 years ago a given airplane with a certain configuration couldn't take off heavy weight at flaps 25 doesn't mean it isn't able to today at 30*.
@Mach
The flap mods I spoke of don't apply to the 732 I'm working with. Our performance for this and other aircraft I work with are always obtained from a very reputable engineering and performance firm I've worked with before, but speed tables are always in house.
Thanks for the reply though, helpful in trying to shed light on this for myself.