Installed new pads on the rear of an 05 sporty, a bit challanging but everything seemed to line up fine, I think. Went to flush out the old fluid and had a difficult time getting the old out. The fluid would come in small amounts and not flow freely. After a few hours of pumping and using a vacuum pump the new fluid started coming through. Bleed it a few more times to make sure all air was out, peddle still doesn't feel right and the pads will not retract from the rotor. When I push in on the caliber the piston does move. Is there still more air in the lines, bleeder valve bad,Pad spring slip?