bbk clutch cable help

[Nor 5.0 Cal]

when i just installed my bbk clutch cable w/ quadrant, and now im tryin to adjust it and i cant get it anywhere close to be halfway decent. i have the adjusting nut almost all the way out and the pedal still ingages like 4-5 inches off the floor. i have the rear on jacks too right now, and no matter where i have it adjusted when i put it in gear it starts grinding and then about 5-10 seconds later it serios starts going woooooooooooooooo.....like a impersonation of a train horn, and slowly gets louder till i take it outta gear. when i tighten the nut up to about 3/4 of the way up the adjusting threards towards the front, it will barely ingage when the pedal is all the way out. im stuck please help its got me in a headlock.