Could be a hunk of junk stuck under the end of the bleed screw. Take the bleed screw all the way out and inspect for any damage to the seat. If it looks okay, I would try blowing the line out with compressed air. Since you're already familar with bleeding the brakes, it's no big deal to do it again.

Hell I must've gone around the sequence a dozen times on the Moke until I had a pedal I was happy with. Got the scars on my head to prove it.
(Silly reference to the ambulance thread also going on)

 

 

you should whatch what you say about "breed screws" - there may be childern or others that are easily offended. 

Don't sweat the petty things and don't pet the sweaty things.

I think you could just replace the wheel cylinder for about $30 or maybe teflon tape the bleed screw.

HELP ..My rear drum brake breed screw doesnt turn tight after I breed it. Now its leaking when i step on the brakes. Is my breed screw striped?what do i need to replace to fix this problem