Just thought that I would reinforce the old trick of tying back your brake lever overnight after bleeding your brakes, especially if you have a bit of a spongy lever. Did it last night on my FJR 1300 after replacing the front hoses, lever was coming back to the bar but no more air coming out of the nipples even after an hour of bleeding. Completely sorted by morning, lever is much more solid and feel is much better than before.
Also tried it with the XJ600 to see if it would improve at all and it actually made a huge difference.
Basically all you have to do it tie back the lever using a cloth or a cable tie if you dont mind marking the grip and leave it for 8 to 12 hours. If it is still bad afterwards, you may have a fluid leak or a master cylinder seal issue.
So believe the hype. It really does work.