Clutch sticking half way to floor

KoolKarmaJoe

First thing, I'm not the original owner. I bought this 09' base 370z December 2014. It had 64500 miles roughly when bought. At time of clutch failure 65643 miles. I bought it from a dealership, and title search says it was traded in by original owner. I use the car for weekend drives only, weather permitting. CSC was documented as being replaced prior to me taking ownership. I wasn't rough on car, in fact just wanted to drive 5 city blocks to local Post Office when it failed while shifting from 1st to 2nd.
Tried all day to bleed & exchange fluid. Finally found a leak at seal where CMC mounts to firewall. I don't know why it suddenly failed. Tomorrow will attempt to tighten CMC, but I must mention that when I first bleed hydraulic system, nasty black as coal fluid with sediment came out! Possibly a sediment blockage within caused failure. I'll update my findings.. Oh, pedal to the floor now CMC is toast I expect.