You should have a noticeably firmer lever after braided stainless lines are installed. It may not seem like air could still be trapped in the lines, but it is there. Try to bleed a few more times and see if it firms up. After bleeding, pull the lever to the bar (after relieving pressure at the bleeder), and zip tie the lever and leave it overnight (make sure you re-tighten the bleeder). Pump it up i the morning and see if it did not help the lever feel. Last thing to try... Crack the banjo bolt at the master cylinder while pulling the lever (just like bleeding at the caliper), but do not crank on it...gentle pull and see if you get air (retighten the bolt before letting go of the lever). Make sure you cover the entire area with rags, and I would cover the bolt when you crack it and pull the lever. More than likely you have air trapped at the master banjo where the two lines attach.