RE: over center spring install
Next weekend when I go home I will look on my car and try to help you out with this. Is this the spring that goes from the end of the pedal to the adjustment bolt under the car? If at all possible post up the manual page (if you have a scanner), and I'll try to figure it out.
When I changed my bellhousing and clutch, I remember having a similar problem. I want to say the more you tighten the clutch adjustment bolt, the more the pedal will start to come back.