Not the dual friction one but the Centerforce II....my pedal is super easy and nice, not stiff at all and not too soft, my stock clutch pedal spring is in, no need to remove it on my 66 Valiant.
My new engine build should produce around 400 HP (fly wheel) so I thought I should go up to the next clutch series otherwise I would have used a slightly lighter one. Also my local auto parts store had a hot deal on the DF series . I wonder , Sireland do you try adjusting the clutch and what engine /hp do you have?