Do you have a bleed nipple on the master cylinder? If so, have you bled there?
Make sure the reservoir never gets empty - keep topping it up. You can apply vacuum, then also pump the brake lever. Once you have a little lever pressure, close the bleed nipple whilst holding the lever, then pump to get maximim pressure, then release the bleed nipple whilst still holding the lever & not letting off till you have closed the nipple. Repeat again & again till you get a constant normal brake feel, even after releasing for some time.
Finally, once the lever travel doesn't really change from pumping with the bleed valve fully slosed, get a good cable tie and keep the lever applying plenty of lever pressure overnight. It'll help get rid of any small bubbles. You can also flick the lines to help dislodge any tiny air bubbles.
Euro RC51 SP2: HRC WSB Ti Hi-Level, T1 Airbox & Snorkel, PCIII, Dymag CA5 Carbon Wheels, Ti64 Spindles (F, R & Swing Arm), Mori Link, Maxton GP7 Shock & Ohlins 832 Forks, Brembo GP Calipers & SBK narrow track (F), Braketech Disc (R), Brembo billet Underslung x 2 Brembo RCS, Tyga Triple, 7075 Stem, Probolt Titanium all over, Babyface rearsets, MR Complete Carbon Lineup, Custom Undertail & CBR 1000 LED, Watsen LED Indicators, Harris Brace, Giles clip-ons, Corbin seat, etc. 2013 BOTY.
Last edited by The Stig; 05-13-2015 at 10:29 AM.