At one point it was said (in the Russian forums, by Baur himself) that using extensions would void the WarBRD warranty.
If the only issue is the maximum deflection and not the danger of breaking or bending something, then I don't see why using extensions would mean you lose the warranty (of course, it's also difficult to prove someone used extensions).
So, can you comment on this warranty aspect? Make it clear, one way or another.