Have you tried back bleeding? Air likes rising way more than being pushed "downhill". I've had several bikes that absolutely would not gain any pedal at all any other way. Willwoods have 4 bleeder screws and pleanty of potential air pockets, use the lower/outer and force the fluid up (pressure pot/syringe) and iI'll bet you'll find you're problem solved regardless of fluid type. EZ Bleeder is a nice setup if you don't happen to have such "Stuff" lying around. I'll bet you $1.00 you will never use another "method" ever again.