puzzler clutch problem

I have recently replaced the slave and master cylinder on my 2000 ranger. I heard that they were a problem to bleed. I gravity bled, vaccuum bled, and tried numerous methods of ridding the system of air. No matter what I do, I can only get the slightest bit of pedal. My slave cylinder is barely moving when the pedal is pressed but it is not enough to disengage the clutch. I did not replace the clutch. Could the problem be there? Please help!