Hayes Bleed issue

I have a set of Hayes Mags, 2002 model. I've bled them myself a half dozen times, my friend tried twice and even my LBS gave it a go, still no Hayes stopping joy. I've never not been able to bleed my brakes, I'm pretty comfortable with the process, and have done it successfully dozens of times before.

Here's the problem:

The hose is new (steel braided) and was installed correctly with a new olive at each end. When you open the caliper bleed screw, you have to open it damn near all the way to be able to force fluid through and even then, you're lucky to get the fluid moving. It's almost like there's a blockage in the master cylinder, fluid just doesn't move through it at all.

Anyone ever experience this before?

Thanks for any help you can offer.

take the drain bolt completely out and inspect it. sometimes the end can be crushed limiting the ammount of fluid to bleed through the system. if thats not the problem, take apart your master cylinder … its very simple.

ps - by drain bolt, i mean the bleed screw in the calipher