Usually, I push the fluid from the Caliper and fill the lever. The fluid seems to not make it the lever (resevoir). I checked the hose for a kink. Pistons move freely (shouldn't matter). Lever action seems fine.
Ha Hoses only worked only marginally better. It seems the whole system was cooked from excessive heat. Tossed the whole mess in the garbage. Serious strike on Shimano for not having available service kits and small parts. No consumer-based customer service also.