[Closed] Hayes Brake Bleed - Blocked Hose/Caliper/Lever?

I'm after a bit of advice if anyone can help me. I was bleeding my Hayes Nine brakes over the weekend. Front brake bled fine, but I'm having problems with the back brake. I can get the bleed kit hooked up fine, but can't compress the syringe and push fluid in through the caliper. I've cleaned the bleed nipple out, but still have the same problem. I presume there's a blockage somewhere (although the brake seems to work fine), whats the best way to diagnose where the blockage is? Disconnect the hose at both ends and go from there?

Any help would be much appreciated.

Thanks in advance, Matt