If the input shaft has seized to the pilot bushing, perhaps putting the trans in gear and turning the driveshaft back and forth could work it free. Make sure the crankshaft isnt moving with it (which is how you would know if this was the problem).

Never heard of an input shaft seizing to a clutch hub. Maybe possible, not sure how within any realistic temps it would achieve.

A totally wrong mix of parts could possibly allow the CSC to push past the pressure plate spring and be stuck on the wrong side of it. This seems very unlikely unless something was way wrong to begin with, like wrong application parts. This would be a clearly visible condition by looking in through the little window.

Otherwise, sticky dowel pin or missed bolt.

Just to add...at this point I would have to agree with the others. Damaged or warped pressure plate. Damaged or warped flywheel. Different parts that don't want to work together. The "experts" gave you some pretty shaky advise which I feel has caused the failure of parts and possible transmission damage.
Hydraulic body straightening equipment and various jigs may be required. Prying between engine and transmission will only likely fracture the bell housing unless it's only minimal pressure.
I'm not sure of your experience level but you may need to bring the car into a transmission shop after all. I truly feel for you.

It is in and it works, the reason it did not before was the RJM peddle (with the Zspeed CSC) moved the pressure plate to far and jammed the back of the HD clutch disk springs. I changed to the Zspeed CSC replacement kit, all is good!

http://zspeedperformance.com/ZSpeed-...e-ZSP-CMAK.htm

I currently have the Z1 mid weight Flywheel and the JWC disk and pressure plate. 30-40% heaver than stock, no slip, easy to modulate with a hint of shudder at low power.

On the bright side I can drop a trans and change a clutch in 3-4 hours start to finish.

So the ZSPEED HD CSC and RJM pedal aren't compatible? I haven't seen anything before on this.

I have both of them without issue.

It's how you have the RJM adjusted.

The OP said it was set to "full stroke" for bleeding. I assume this means the stock-like setting as RJM states is necessary for bleeding a new clutch so I don't quite understand yet.

Too much stroke and it over-traveled the CSC. Jamming the pressure plate fingers into the clutch disc.

Correct I destroyed two of them. It works fine with the stock clutch, but if your new disk is higher at the damper springs, you can have over travel.

Only way it can hit the hub springs are 2 things, Either the pedal was set way too high allowing the slave to travel farther than stock or the clutch kit itself is not set-up correctly or mixed/matched components.

I HAVE seen this before with a new JWT kit, If the clutch pedal is set too high it can over travel and the diaphragm spring will hit the clutch hub, turned out to be a problem with the clutch itself. After the clutch broke in a little it stopped doing it. Basically once the clutch seats in a little the diaphragm spring in the pressure plate will rise as intended and will give more clearance between the clutch hub and pressure plate spring. The other customer had told me if he let up on the clutch a little bit it would release and if he held it to the floor it would not release all the way and there was a noise, This told me what the issue was immediately.

The ZSpeed HD CSC slave will not travel any further than the stock slave, They are identical in bore/volume.

I have never seen the clutch actually get damaged from this though, It will just rub a spot on the hub, make a little rubbing noise and not release if you hold it all the way down to the floor and keep it hitting the hub effectively making the clutch try to engage as you are pushing it onto the flywheel.

Glad you got it fixed regardless!

Impressive on the clutch change time!

I knew something was fishy here. As Joe said their CSC has same travel as stock and RJM pedal set to 0 is same as stock so either the clutch kit was bad/setup wrong or the pedal really wasn't set to 0.

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Last update, I talked to Joe at Speed, and I have the old CSC with the .5 inch adapter plate. The new ones have .25".

The extra .25 inch caused all the problems.

If that was the case it was a Early HD slave for the OS Giken twin/triple disk.
That would cause issues for sure if used with a single disk clutch kit!