Brake Bleeding: What am I doing wrong?

Thanks guys!  Lots of good advice out there.  Think I'm getting closer on this thing.  Tonight I redid the bench bleeding of the M/C.  I'm very confident it's right this time and the part is good.   No bubbles at all, no matter which way it's oriented and there is almost no give with the ports plugged.  I re-installed and hooked up the outlets.  I'm in the process of trying my gravity bleed method right now.  I'm doing front and back on the driver side simultaneously.  The back is dripping like mad, but it was more or less already bled.  The front is dripping, but more slowly.  I know there is a good chance that this won't work, but I figure what's the harm in trying.  I'll try the pass. side tomorrow and see if I have a hard peddle after that.  I'm sure it's even less likely it will work on the pass side, but we'll see.  I'm a little worried that my earlier tries of using the vacuum bleeder could have collapsed my new front hoses.  There were a couple of times I tried applying up to 20" Hg.  in an effort to get fluid to flow to the fronts.  Hmmm. 

WhoHoo!  Hard pedal, finally!   Gravity bleeding actually seems to have worked.  I was most worried about the pass side front, but after about 15 minutes fluid finally started flowing.  I let it drip drip drip for about a half hour after that (inner RR was going at the same time) and then let the outer RR flow for a few minutes and then double checked all bleeders were tight and voila! hard pedal.  Thanks for all the advice and support, guys.  Think I'll go crack a beer to celebrate.  

Dave, I am so happy that things worked out for you that I might have a beer and smoke a cigarette in your honor...............NOT really I hate beer and don't smoke, but you get the idea! I really appreciate people who never say die. You never gave up and found and admitted to a slip-up. As you mentioned other sites picking on people, it's great that it's not done here. Now on to the next challenge 

Yep!  And that next challenge (all I have left, really) is dropping in the engine and then getting it running.   Can't wait for that fun and excitement.  Thanks again, guys!

Hopefully dropping in the engine goes smoother! Glad you were able to get things working like you wanted! Betcha it was a lot easier workinc on that master cylinder and proportioning valve with the engine out! Great job!