Hydraulic TO Bearing and clutch pedal travel Help...

[Tom.A]

Looking for some feedback from those whom shimmed a hydraulic TO bearing.

I had to get a tow home yesterday after I lost my hydraulic clutch. I had hope that the fluid leaking under the car was because bleeder had vibrated loose but it was not. It is coming from the lower housing. I plan to try and yank the trans tomorrow and inspect. I have listed a little details of the application:
LS3 with a TKO 600, Using the Hurst Drivline supplied kit which inlude a tilton master with a aluminum bracket. Throw out bearing is a Ram with a max travel 0f .700". I am also using a LSX Hurst bell housing which is a new casting (LSX style) of the old 621 style bell. Here are my measurements when I installed prior. Bell depth was 3.08" to the bell housing face from the pressure plate fingers, for the gear box it was 2.47" from trans face to the face of the TO bearing (compressed/relaxed) so that left me with a delta of .61". As per the instructions each conical shim is .100". Looking at my notes I used 4 shims which brought it to 2.87". The bearing to pressure plate gap needs to be a min. .125" to a maximum of .225", so 3.08" minus 2.87" = .210" . Fast forward about ~ 600 miles and I got a leaker. Sorry for the details but I just want to be sure I am not missing something simple.
Now with the above shimming in mind here is my next question: My clucth pedal would have to be all the way to the floor and the littlest (release)travel it would move the car. I always thought it should have more travel before it disengaged. Would this be an indication of more or less shims needed?
I am considering trying an external slave cylinder but it I may just give another try with a RAM bearing. Thanks in advance for i=any feedback.