brake issues, help me get my car driving

I second post #6. He is recommending that you make some "test lines" on the MC and see if it produces a stiff pedal with those. You want them facing upward so you can get all the air out. Have someone SLOWLY press the pedal and tighten the top plug when you see pure fluid flowing. Then lift and press the pedal again. If it still sinks, you know the problem is the MC, and please let us know the result. You can probably make just one tube and test the front port, then the back, keeping the other port with the recirc tube. Many find that the purty, expensive stuff isn't always great quality.