Yes, I agree, the pedal is to sluggish for me. I played several pieces by Lemmens on this sample sets but never really came to like it. Piotr Grabowsky has better sample sets in my opinion (Azzio, Giibasco, Friesach; and of course the new Cavaille Coll sample set, though that one is not free)
RE: L. Lefébure-Wély: Prelude in D-major. Secrets of Organ Playing Contest Week 73