I thought I read that in the DeTomaso factory, the Marcels were removed from the disks, and the clutch disks were re-riveted together, due to the need for more space between the pressure plate and the flywheel?
I recall this from a while back, and it should only apply to the original (factory) clutch assemblies - if true.
This wouldn't affect the pedal effort, though...
Rocky
If you search on the word "marcel", you will find a couple threads referencing the Marcel being removed, or flattened, one by Dan Jones, and one by a dude named Pantera Doug.