[roundel]

I have a friend that droves a Merc Cossie. He had a persistent soft peddle. I repeatedly asked if he was SURE there were no bubbles. While we were bleeding the old skool way with me on the peddles telling him it feels like bubbles, he noticed that the dual chamber reservoir did not fill both sides unless you nearly flooded it and waited for the sieve to empty. We started over and his brakes were rock solid. He was a bit embarressed.

Lesson: make absolutely sure the reservoir is FULL and NO bubbles are coming out when you bleed your brakes.

I hope your issue is this easy to rectify.