In an unguarded moment, Mmm, Boost let slip...
What I did try before is to pull the cable all the way out, then I have pedal feel and I can almost change gear without grinding.
Based on this, it is probably safe to assume that the clutch is OK and
the problem lies in the cable adjustment. Since a cable clutch is not
self-compensating for wear, the pedal gets closer to the floor as the
clutch wears. It is common to "shorten the cable" to raise the pedal
and make sure that the clutch is fully disengaged before the pedal hits
the floor.
Now, if someone was to install a new clutch without backing the cable
adjustment off, the new (thicker) clutch plate would push the pedal
right up, and possibly even partially disengage the clutch

Due to
the "over-centre" action of the fingers on the pressure plate, this may
well feel like a loss of pedal.
I reckon if you double check the cable adjustment, and the brackets
that hold the end of the cable (to make sure nothing has jumped out
of place), you should be close to solving this mystery
Cheers... jondee86